Sorry for getting up late. This entry is over Chapter 7 Similarity. THIS MUST BE 4 PARAGRAPHS WITH AT LEAST 4 SENTENCES. Due by class time on Wednesday Jan. 23.
Sorry for getting up late. This entry is over Chapter 7 Similarity. THIS MUST BE 4 PARAGRAPHS WITH AT LEAST 4 SENTENCES. Due by class time on Wednesday Jan. 23.
January 22, 2013 at 2013-01-22T00:20:56+00:00 12:20 am
Chapter seven started pretty eaisy with proportions. The main property was the cross-product property, using it to solve for variables. Then it was scales and scale drawings, these were when you took a scale like 1in=1ft and used it to draw the real thing smaller. These come into use when making plans for a house of any building project.
Similar figures and the similarity ratio were next. These ment corresponding angles are congruent and corresponding sides are proportional, the ratio of the corresponding sides is the similarity ratio. A Golden rectangle can be divided into a square and a rectangle that is similar to the original. The golden ratio, which the length and width are in, is 1.618.
Proving triangle similar was next, using three ways to prove them. One is by Angle Angle(AA~), another is Side-angle-side(SAS~), the last one is Side-side-side(SSS~). We learned a few more ways to find variable in right triangle, by using the geometric mean and 1 theorem and 2 corollary. This was basically using the altitude of the triangle.
This chapter was a little different since we reversed the class room. It had kinda a rocky start with the new edmodo stuff but I think I got the hang of it finally. Im not going to lie though I like the original way better. Hopefully I do well on the test.
January 22, 2013 at 2013-01-22T01:27:39+00:00 1:27 am
7-1 Ratios and Proportions- This section wasn’t hard just because all it was, was proportions. In ratios and proportions you just put the numbers as a fraction and then just cross multiply. On of the numbers needs to be a variable. It wasn’t that hard just mostly review on some algebra stuff.
7-3 Proving Triangles Similar- This stuff is kind of like proofs because you have Angle-Angle Similarity, Side-Angle-Side Similarity and finally Side-Side-Side Similarity. But there isn’t any writing you just have to look at the triangle and see which things are similar. Sometimes it isn’t always easy to see whats similar. But it isn’t that bad.
7-5 Proportions in Triangles- This section wasn’t that bad as long as you could see the corresponding sides. You just mostly set up proportion and figure it out. Sometimes you might have to factor the equation you get from the proportion. This was mostly easy.
Overall this section wasn’t that bad. It was kind of a new experience with the new flipped classroom and all you have to do for homework is watch the video. Sometimes it’s nice to not have homework other than watching the video. I hope the test and the next chapter is easy
January 22, 2013 at 2013-01-22T02:03:09+00:00 2:03 am
Chapter 7 section one was about ratios and proportions. A ratio is a comparison of two quantities. For example a to b or a :b , a/b . A proportion is a statement that two ratios are equal. For example 6/24 = 4/16 = 1/4 this is proportions.
Section 2 had a lot of different things that we learned about. Like for example when two polygons have the same shape but not necessarily the same size. They use this (~) symbol to show that they are similar. We learned about the golden rectangle that has a golden ratio. this golden ratio is 1.618/1.
Section 5 is about triangles and proportions in them. Like if you have a triangle with a line in it. With using the line you can make a proportion. So you could have 3, 4, and 2, so you would put 3/4 and 2/x. Then cross multiply to get the x=5. something lol.
I did like this chapter for the most part. The cross multiplying was the easy part. But there were some things that were hard that had multiple steps to just get one answer. I liked learning about the golden ratio to. I like using Emodo its a good change, i hope i do good on the test.
January 22, 2013 at 2013-01-22T18:10:06+00:00 6:10 pm
First section was about ratios and proportions. A ratio is a comparison of two quantities. A proportion is a statement that two ratios are equal.When three or more ratios are equal, you can write an extended proportion.
Section 2 is about simmilar polygons. Two figures that have the same but not necessaril the same size are similar. Two polygons are similar if 1 corresponging angle are congruent and 2 corresponding sides are proportional. The ratio of the lengths of corresponding sides is the similarity ratio.
Section 4 was about similarity in right triangles. Proportions in which the means are equal occur frequently in geometry. For any two positive numbers a and b, the geometric mean of a and b is the positive number. In a right triangle, the altitude to the hypotenuse yyield three similar triangles.
I thought this section was hard. But the flipped classroom made it easier. I should do really good on the test. Edmodo is a pretty good website.
January 22, 2013 at 2013-01-22T19:55:03+00:00 7:55 pm
In chapter 7 we learned about ratios and proportions. Ratio means like A:B is C:D. A proportion is like a/b = c/d. We also learned about scale drawings.
Similar polygons was a topic too. LLike if 2 angles of the two triangles are congruent then so are the triangles. You can have AA. GOlden ratio is 1.618:1.
Indirect measurent is a big part too. I don’t like messing around with the square roots but i guess i have too. I dont like geometric mean. I dont like much of anything.
I hope i do good on this test. I want my geometry grade to be higher. I probably won’t do that good. Guess I’ll just study.
January 22, 2013 at 2013-01-22T19:59:50+00:00 7:59 pm
In Chapter 7, Section One, we talked about ratios and proportions. A ratio is like 2:4 it compares the amount of two things. A proportion is a statement that two ratios are equal. This section was okay.
In Section Two, we learned about similiar polygons. One corresponding angle congruent two corresponding sides are proportional. The Golden Rectangle was also in this section and it was confusing, very confusing. Your credit card is this shape and it is easy to look at. I can see it a little better.
In Section Three, we talked about proving triangles similiar. Like sss sas and asa which is review and nothing new. It was a little difficult, because it was harder to understand. With Mr. Kutscher’s help I did get through it.
In Section Four, it was about similiarities in right triangles. There were three theorems in this section Thereom 7.3 corollary is the length of the altitude to the hypotenuse of a right triangle is the geometric mean of the lengths of the segments of the hypotenuse. The other corollary to 7.3 is the altitude to the hypotenuse of a right triangle separates the hypotenuse so tht the length of each leg of the triangle is the geometric mean of the length of the adjacent hypotenuse segemnt and the length of the hypotenuse. It was a difficult but I came in before class and Mr. Kutscher explained it better to me so I get it. It is amazing what a little extra time can do to help better understand something.
January 22, 2013 at 2013-01-22T20:05:21+00:00 8:05 pm
i didnt think this chapter was too hard. at some points it could be. but mostly it wasnt to bad. i cant wait to take the test.
in the first part we learned about the crossing thing. that wasnt too bad. it was a little difficult but wasnt too bad. i think ill do just fine on that part of the test.
in the next part we learned about finding variables of triangles. that wasnt to bad. it was hard at some parts tho. i think i do fine on that part.
overall i think it wasnt to bad. it was one of the easier chapters weve done. i think ill do fine on the test. i know ill do fine on the test!
January 22, 2013 at 2013-01-22T20:21:12+00:00 8:21 pm
In chapter 7 we learned alot about cross multiplying and proportions, and ratios. Ratio is like A:B=C:D. A proportion is a statement that two ratios are equal.
Section 2 we learnd how to prove if 2 shapes are similar or (~). they can be similar by AA, SAS, SSS. And we learned about the golden ratio which is 1/1.618.
Section 4 was about sililarity in right triangles. you have to have the bottom two numbers to find the altiude of the triangle. then use pathagreom thereom to find the outside numbers.
This chapter was a little diffucult sometimes. But it wasnt to bad at first i was doing it all wrong so i wasnt getting the right answers. But when i started to figure out how to do it i got the right answers, i mean who would think of that.
January 22, 2013 at 2013-01-22T21:53:53+00:00 9:53 pm
In chapter 7 we learned about similarity. in lesson 1 we learned about ratios and proportions. A ratio is a comparison of two quantities and a proportion is a statement that two ratios are equal. in a proportion you use cross-product property which is multiplying in a ratio.
In lesson two we learned about similar polygons. Te similar sign is like the song. sign but without the equal so its just a wavy line really. in lesson 3 we learned about proving triangles similar. Now you pretty much apply the stuff from lesson2 but now you have to tell why. The reasons are: AA, SAS, and SAS.
In lesson 4 we learned about similarity in right triangles. You have to figure out how to find x or y or both in a right triangle and also in other triangles but in this lesson a right triangle. In the last lesson, lesson 5 we learned about proportions in triangles. this had to deal with what looks like a midsegment in a triangle but we dont know that and its not a midsegment. but all you do know is that they are //.
I thought this chapter had a few confusing parts that took more than one time for me to know, but once we did the review it made a lot more sense to me. I liked that some of the stuff was from last year it made some things a lot easier. I also like that it had to deal a little with what we learned last semester to because it ties everything together. I hope I will do really good on the test and wish everyone good luck!!!!!!!!!
January 22, 2013 at 2013-01-22T22:18:07+00:00 10:18 pm
First off in chapter 7 section 1 we learned about ratios and proportions. When you set up a proportion you can cross multiply the ratios. For example: x over y equals 5 over 6 six so when you cross multiply you would get 6x equals 5y. You can also have extended proportions for example: 6 over 24 equals 4 over 16 equals 1 over 4.
In section 2 we talked about similar polygons. The only way two polygons can be similar is if there corresponding angles are congruent and corresponding sides are proportional. In section 3 we learned about proving triangles similar. There is three different reasons a triangle can be similar, by AA, SAS, or SSS.
In section 4 we talked about similarity in right triangles. The definition of a geometric mean is the number x such that a over x equals x over b, where a, b x are positive numbers. Finally in section 5 we learned about proportions in triangles. We mostly applies the Pythagorean theorem in this section which is A squared + B squared = C squared.
Overall I kind of though this chapter was a little difficult. I think the easiest part was in the very beginning setting up the proportions. I think the hardest part was applying it to real life situations with using length and width. I think that I wont do fantastic on the test, but I’ll do ok.
January 22, 2013 at 2013-01-22T22:45:20+00:00 10:45 pm
Chapter 7 section one was about ratios and proportions. A ratio is a comparison of two quantities. For example a to b or a :b , a/b . A proportion is a statement that two ratios are equal. For example 6/24 = 4/16 = 1/4 this is proportions.
In section 2 we talked about similar polygons. The only way two polygons can be similar is if there corresponding angles are congruent and corresponding sides are proportional. In section 3 we learned about proving triangles similar. There is three different reasons a triangle can be similar, by AA, SAS, or SSS.
In lesson 4 we learned about similarity in right triangles. You have to figure out how to find x or y or both in a right triangle and also in other triangles but in this lesson a right triangle. In the last lesson, lesson 5 we learned about proportions in triangles. this had to deal with what looks like a midsegment in a triangle but we dont know that and its not a midsegment. but all you do know is that they are //.
I thought this chapter was very hard because the flipped class room. i think we should go back to normal because not all of the students can watch the videos. at school sometime they dont have time to watch them. well i hope i do good on the test. (GO JAR JAR BINKS)
January 22, 2013 at 2013-01-22T23:19:39+00:00 11:19 pm
Chapter 7 we learned about ratios and proportions, similar polygons, proving triangles similar, similarity in right triangles, and proportions in triangle. Ratios are a comparison of two quantities. You can write it as a to b or a:b. Proportion is a statement that two ratios are equal. You can write a proportion as a:b = c:d.
Cross product property is when you multiply both sides a/b = c/d by bd. We also learned about scale drawings and their scales. Section 2 we learned about similar polygons. A polygon is similar to another polygon if corresponding angles are congruent and if those corresponding angles are proportional. A ratio of length of corresponding sides is known as a similarity ratio.
We learned about a golden rectangle is a rectangle that can be divide into a square and a rectangle that is similar to the original. It also appeals to the eye that’s why most things we like such as credit cards and iphones appeal to us because they are golden rectangles. You can find a golden rectangle by taking 1.168/1 * Length/ width. Section 3 there was indirect reasoning which is where you can use similar triangles and measurements to find distances that are different to measure directly.
In the last section, section 4 we learned geometric means which is the number x such that a/x = x/b where a, b, and x are positive numbers. This chapter was a little easy. Hopefully we can get to learn more about something’s. But overall I hope I will do good on the test!
January 23, 2013 at 2013-01-23T00:25:20+00:00 12:25 am
We learned a lot in this chapter. I thought overall it was pretty easy. There were a couple things i didn’t get but i got the hang of it. So i hope i do really well on this test and i hope everyone else does too.
In the first lesson we talked about ratios and proportions. I thought this was probably the easiest lesson. For proportions all you had to do was set it all up and then cross multiply and solve. Ratio is a comparison on two quantities.
The next lesson we talked about was similar polygons. This was easy you had to set up a proportion to see if the polygons were similar. We also learned about the golden rectangle. The formula for it is 1.618/1. A credit card would be an example of a golden rectangle.
The last lesson we learned about was proving triangles are similar. This was kinda easy. You had to set it up in a proportion and then solve. Then you had to see if they were similar if they were you had to say how which that would be by a theorem. The three theorems are SAS~, AA~, and SSS~.
January 23, 2013 at 2013-01-23T00:52:40+00:00 12:52 am
In Chapter 7 we learned about similarity. Some terms we learned are cross-product property, extended proportion, geometric mean, golden ratio, golden rectangle, indirect measurement, proportion, ratio, scale, and a few more. Section1 was about ratios and proportions. Ratios and proportions are comparisons of two or omre statements.
Section 2 was about similar polygons, which have the same shape but not necessarily the same dimensions. To see if the shapes are similar you find the ratios. In section three we learned about proving triangles similar, which are basically the same as section two but with triangles. There are two theorems in this section, they are Side-Angle-Side Similarity Theorem, and Side-Side-Side Similarity Theorem.
Section 4 was about similarity in right triangles, which used the pythagorean theorem. It also uses Theorem 7-3, and Corollary 1&2 to Theorem 7-3. In section five we learned about Proportions in triangles, which are solving ratios and finding the variables. This section included the Side-Splitter Theorem and the Triangle-Angle-Bisector Theorem.
Chapter 7 had a few rough spots. This was the first chapter with Edmodo. Hopefully I’m feeling better tomorrow so I can take the test. I think I will do pretty good on the test.
January 23, 2013 at 2013-01-23T01:22:17+00:00 1:22 am
When we began chapter 7 section 1: you taught us about ratios and proportions The Way you set up a proportion we cross multiplied the ratios EX: y/ x 4/12 so then we cross multiply we get 4y = 12x You can also have extended proportions for example: 2/10 equals 1/5
In lesson 2: We learned about similar polygons, than lesson 3; we learned about proving triangles similar. Now you pretty much apply the stuff from lesson 2 but now you have to tell why. The reasons are: AA, SAS, and SAS.
Section 4 was about similarity in right triangles. Proportions in which the means are equal occur frequently in geometry. For any two positive numbers a and b, the geometric mean of a and b is the positive number. In a right triangle, the altitude to the hypotenuse yield three similar triangles.
I really don’t like math…no offence Mr.Kutcher but I promise to try to give it my best effort. I have nothing it against it just a subject I’ve never been good at…..ever.
January 23, 2013 at 2013-01-23T01:24:40+00:00 1:24 am
In chapter 7 we learned all about similarities. Most of the chapter was simple but some parts were dificult. We mostly did cross multiplication. Which is a good thing because thats very easy. I like things that are easy.
The first thing we learned about are Ratios and Porportions. This was very simple because we have been doing ratios and porportions for a long time. All you have to do is cross multipy then divide. Simple as that. I thought this section was the easiest one.
We also learned alot about how polygons are similar. It wasnt much didfferent then the first section. It still was involving porportions and cross multiplication. We leaned aboput the golden rectangle in this section. the golden ratio is 1.618/1. always remeber that.
It started to get more difficult when we added in some more theroms. I didnt know how to do thoes very well. I did like the radicals though. I thought that the radicals were very easy and simple to figure out. This whole chapter had its ups and downs but over all i thought that it wasnt that bad. There are a few things thati dont undertand, but for the most part i get it.
January 23, 2013 at 2013-01-23T02:34:12+00:00 2:34 am
in this chapter we learned about similarities. Similarity is saying how two shapes are similar. they could be set up in a ratio like 1in:4in. they can also be set up like the dimensions of a board.
In this chapter, we learned about models and real size. when looking at a map, it could be for every inch on the paper equals 25 miles. If a model car is a 1/50 scale and the car’s length is 108in , then the model’s length 2.16 inches. this could be with planes and other vehicle models too.
similarities of shapes were the most difficult my opinion. to find the side of one triangle to a similar one, you would have to find the ratio of two of the sides. multiply that number by a side of the shape with a missing side. if the shapes are a triangle inside a triangle, then you put them as fractions and set them equal to each other and cross multiply.
This chapter was the hardest my opinion. the easiest was the scale models. the hardest was similarties of triangles. if i had money for bribes, now would be the time to do it. lol
January 23, 2013 at 2013-01-23T02:53:28+00:00 2:53 am
In chapter 7 we learned a lot of things. The cross product property is the product of the extremes of a proportion is equal to the product of the means. The extended proportion is a statement that 3 or more ratios are equal. The geometric mean is the number x such that a/x=x/b where a, b and x are positive numbers.
The golden ratio is the ratio of the length of a golden rectangle to its width. The indirect measurement is a way of measuring things that are difficult to measure directly. A proportion is the statement that two ratios are equal. A ratio is comparison of two qualities by division.
A scale is the ratio of any length in a scale drawing to the corresponding actual lengths. A scale drawing is a drawing in which all lengths are proportional to corresponding actual lengths. Similar means that the object has the same shape and have all their corresponding dimensions proportional. The similarity ratio is the ratio of the lengths of corresponding sides of similar figures.
I didn’t mind doing chapter 7. I didn’t understand some things but once I asked questions I understood it better. I really hope that I do well on this test.
January 23, 2013 at 2013-01-23T03:04:36+00:00 3:04 am
In Chapter 7, we learned about similarity in polygons. First we learned about ratios and proportions and how you can cross-multiply to get the value of x. Then we reviewed how to use radicals to help us in the next lesson. Then we determined how to classify two figures similar.
Then we learned about the golden ratio. The golden ratio is like the ratio at is used to make credit cards, tvs, and computers. It is appealing to the eye. The ratio is 1.618:1.
Then we learned how to prove triangles similar with AA, SAS, and SSS. Then we learned how to simplify radicals and how to apply them with the geometric mean in section 4. We used altitude, Pythagorean Theorem, and the hypotenuse to find the lengths of the sides in three triangles. Then we finished the chapter with proportions in triangles.
I think this chapter was ok for the most part. The easiest part for me was the radicals. The hardest was the altitude and all of that. I think I will do good on the test.
January 23, 2013 at 2013-01-23T04:03:38+00:00 4:03 am
This was triangles again. The similar stuff. The ~ sigh means similar. This stuff was hard.
I didn’t like this chapter. It was confusing. Some of it I couldn’t figure out. I’d rather do proofs honestly.
This is very late to be puttin up my blog. I completely forgot about it. I shoulda done it sooner. I’m doing vocab in the morning.
All in all the chapter was hard. College kids would fail this stuff. That means I’m gonna fail it. I’m not a college kid.
January 23, 2013 at 2013-01-23T04:48:53+00:00 4:48 am
I thought that this chapter was an easy one. The beginning was really was for me. Then I missed a few days later in the chapter so it kinda got harder. But it wasn’t too bad.
The ratio part of the chapter was very easy. All u had to do was really make it into a fraction. Proportions were the next part of section 1. Those two parts are easy.
Section 3 was about naming triangles. SSS and SAS for example. This part was kinda easy. I should do fine on that part.
So overall I think that it was an easy chapter. Some parts were kinda difficult though. I’m very excited for the test. I should do good.
January 23, 2013 at 2013-01-23T05:03:16+00:00 5:03 am
First we talked about similar figures and ratios. A similar figure is a figure that looks the same but isn’t always the same size. A ratio is a comparison of 2 quantities and is displayed as 1:3, 1/3 or 1 to 3. It describes the degree of difference from one similar shape to another similar shape. We also talked about golden ratios. The golden ratio is the ratio of length and width in a golden rectangle.
A golden rectangle is a rectangle that can be divided into a square and rectangle that is similar to the original rectangle. We also talked about the geometric mean, it is a proportion in which the means are equal occur frequently.
January 23, 2013 at 2013-01-23T05:41:16+00:00 5:41 am
Section 5 is about triangles and proportions in them. Like if you have a triangle with a line in it. With using the line you can make a proportion. So you could have 3, 4, and 2, so you would put 3/4 and 2/x. Then cross multiply to get the x=5. and then you get your answer.
Then we learned about the golden ratio. The golden ratio is like the ratio at is used to make credit cards, tvs, and computers. It is appealing to the eye. The ratio is 1.618:1.
Then we learned how to prove triangles similar with AA, SAS, and SSS. Then we learned how to simplify radicals and how to apply them with the geometric mean in section 4. We used altitude, Pythagorean Theorem, and the hypotenuse to find the lengths of the sides in three triangles. Then we finished the chapter with proportions in triangles.
i feel like im going to like this semester way better then the last one. because we dont have any proofs. i love to cross multiply. it is really easy. i got my vocab done and i think i will do decent on the test.
January 23, 2013 at 2013-01-23T12:34:42+00:00 12:34 pm
In chapter 7 section 1 we learned about ratios and proportions. To set up the proportion you can cross multiply the ratios to get x. Then we did some radicals, which anestly im not very fond of. Then we looked at two figures and explained how they are similar which was pretty easy.
Then we learned about the golden ration. Which blew my socks off!!! A golden rectangle is appealing to the eye. Some of the golden rectangles we use every day are credit cards, TVs, phone screens, and computer screens.
When we learned how to prove two figures similar, we used some thermos we used in proofs such as AA, SAS, SSS. To figure if they were similar you had to set up the sides of the corresponding figure into a ration, then into a fraction. We also used the altitude, Pythagorean Theorem, and the hypotenuse to find the lengths of the side of a figure.
This chapter was kinda easy but some of it i still don’t understand, but i like the golden ration part, it was pretty cool. Hope i do good on this test
January 23, 2013 at 2013-01-23T13:27:20+00:00 1:27 pm
In chapter 7 we learned about ratios and proportions. Ratio means like A:B is C:D. A proportion is like a/b = c/d. We also learned about scale drawings. Similar polygons was a topic too. LLike if 2 angles of the two triangles are congruent then so are the triangles. You can have AA. Gden ratio is 1.618:1. Indirect measurent is a big part too. I don’t like messing around with the square roots but i guess i have too. I dont like geometric mean. I dont like much of anything. I hope i do good on this test. I want my geometry grade to be higher. I probably won’t do that good. Guess I’ll just study.
January 23, 2013 at 2013-01-23T13:28:53+00:00 1:28 pm
In chapter 7 we learned a lot of things. The cross product property is the product of the extremes of a proportion is equal to the product of the means. The extended proportion is a statement that 3 or more ratios are equal. The geometric mean is the number x such that a/x=x/b where a, b and x are positive numbers.
The golden ratio is the ratio of the length of a golden rectangle to its width. The indirect measurement is a way of measuring things that are difficult to measure directly. A proportion is the statement that two ratios are equal. A ratio is comparison of two qualities by division.
Proving triangle similar was next, using three ways to prove them. One is by Angle Angle(AA~), another is Side-angle-side(SAS~), the last one is Side-side-side(SSS~). We learned a few more ways to find variable in right triangle, by using the geometric mean and 1 theorem and 2 corollary. This was basically using the altitude of the triangle.
i love darthvader. math is amazing. i think ill do good on the test and now im done with blog
January 23, 2013 at 2013-01-23T13:35:03+00:00 1:35 pm
Ratios and proportions- a ratio is a comparison o two quantities. You can right a ratio A to B or A:B. A proportion is a statement that two ratios are equal you can right proportion as A/B=C/D.
Similar polygons- two polygons are similar if corresponding angles are congruent and corresponding sides are proportional. The ratio of the lengths of corresponding sides is similarity ratio. A golden rectangle is a rectangle that can be broken down into a square and a rectangle that is similar to the original rectangle. In any golden rectangle the length and te width are in the golden ratio which is 1.618 to 1.
Proportions in triangles-side splitter theorem says if a line is parallel to one side of a triangle and intersects the other two sides then it divides those sides proportionally. The corollary to theorem 7-4 Is that if three parallel line intersect two transversal, then the segments intercepted on the transversals are proportional. Theorem 7-5 says that if a ray bisects an angle of a triangle. then it divides the opposite side into two segments that are proportional to the other two sides of the triangle.
This chapter was probaly the hardest we’ve ever done. I had no idea what I was doing the majority of the time. The videos were cool at the beginning but as the lessons got harder. It became hard to fallow along
January 23, 2013 at 2013-01-23T13:42:27+00:00 1:42 pm
In ch.7 we learned about similarities and ratios. it was hard at first but you get the hang of it. i will talk about both of these. here we go.
similarites are if a shape is similar. its symbol is a squiggly horizontal line. i like to draw it. you have to do some cross multiplication stuff.
ratios are kind of like putting something together with something else. they are kind of fun if you know what you are doing. a ratio would look like 7:43 or something like that(i just used random numbers)
overall this chapter was awite i guess. ill give it 6/10. i will prolly get a C on the test but i am shooting for a B….yep
January 23, 2013 at 2013-01-23T13:47:50+00:00 1:47 pm
In chapter 7 we learned about ratios and proportions. They are basically fractions. We learned how to do the geometrical mean. This sign ~ means similar.
Two polygons are similar when they have corresponding equal angles and corresponding proportional sides. We used AA~ SAS~ and SSS~ to prove triangles similar. We had triangles inside triangles that were right triangles. Some triangles had altitudes that we had to figure out.
We also learned about the golden ratio, rectangle, and spiral. The golden ratio is 1.618. We watched a video about it. The golden rectangle is appealing to the eye. There are golden rectangles everywhere, like your credit card. The golden spiral is made in the golden rectangle.
This chapter was very challenging. I didn’t like it at all. I just want to do the test and move on. I’m better at algebra than geometry.
January 23, 2013 at 2013-01-23T13:51:24+00:00 1:51 pm
This chapter was not the easiest. I was really confused about most of it but when I did understand it it was kindaeasy but doing the notes at home I didn’t really enjoy the most. But asking questions yesterday helped a little bit. We talked about the golden rectangle. And the ratio for that is 1.618 over 1. And we did proportions. Those were easy. Doing the deminsions Nd stuff werent the easiest but were ok. I hope i do ok on this test.
January 23, 2013 at 2013-01-23T14:04:15+00:00 2:04 pm
inchapter 6 we did alot such as finding the geometric mean. How you fid the geometric mean is that you multiply two legs of a triangle two triangles then square root them. whn you get that you aso ge the altitude
there waas a lot of cross multiplying for the chapter too. most of the chapter was qwuare rooting and cross multiplyin. this part was review for me. itw was easy. seting them up was the hard part for me when they were in centences.
So if you have 5/x=x/3 you crooss multiply to get 15= x^2. then you square root it to get radical 15 =x. you sometimes get perfact squares but other times you dont but if not you leave the radical on
this was an esasy and hard chapter for me. there were new things and review too but other than that it was easy. good luck everyone on the test.
January 23, 2013 at 2013-01-23T14:47:58+00:00 2:47 pm
in the first part we learned more about cross multiplying. we also learned about prpportions. we were taught things on ratios too. my favorite one was the golden ratio.
we then learned about similarity. you have to cross multiply to tell if 2 things are similar. you represent it by a ~. that was the easiest part probably.
next we learned about proving them similar. we didnt have to do any proofs though. we still used AAA SAS AAS etc. this part was kind of a review
i did pretty good on the review, so hopefully ill do fine on the test. an A would be great but ill take a B. doing the vocab and blog help alot.
January 23, 2013 at 2013-01-23T17:57:20+00:00 5:57 pm
In chapter 7 we learned about ratios and proportions. Ratio means like A:B is C:D. A proportion is like a/b = c/d. We also learned about scale drawings.
In Section Two, we learned about similiar polygons. One corresponding angle congruent two corresponding sides are proportional. The Golden Rectangle was also in this section and it was confusing, very confusing. Your credit card is this shape and it is easy to look at. I can see it a little better.
In section 3 we learned about proving triangles similar. There is three different reasons a triangle can be similar, by AA, SAS, or SSS.
Section 4 was about similarity in right triangles. Proportions in which the means are equal occur frequently in geometry. For any two positive numbers a and b, the geometric mean of a and b is the positive number. In a right triangle, the altitude to the hypotenuse yyield three similar triangles.
I didn’t have much problem with the first section of Chapter 7. It was the 2nd section was a little harder for me to grasp. Section 3 I am having a hard time to grasp, thougth when we got to section 4 it got a little better.
January 23, 2013 at 2013-01-23T18:00:33+00:00 6:00 pm
Chapter seven started pretty eaisy with proportions. The main property was the cross-product property, using it to solve for variables. Then it was scales and scale drawings. These come into use when making plans for a house of any building project.
we then learned about similarity. you have to cross multiply to tell if 2 things are similar. you represent it by a ~. that was the easiest part probably.
The golden ratio is the ratio of the length of a golden rectangle to its width. The indirect measurement is a way of measuring things that are difficult to measure directly. A proportion is the statement that two ratios are equal. A ratio is comparison of two qualities by division
this chapter was pretty easy.i think the test will be easy. the triangle proportions is kinda hard to put up. but i think ill do good on the test.
January 23, 2013 at 2013-01-23T18:05:29+00:00 6:05 pm
I thought chapter 7 was pretty easy for the most part. I liked how it was some review and some new stuff. I also liked how we did the flip the classroom and got our notes at home and did out work in class. The newest thing i learned was the golden rectangle.
Section 1 was Ratios and Proportions. I thought this section was pretty easy because it was all just review for us. We learned about the Cross-Product Property which is, Multiplying both sides of a/b = c/d by bd results in the first property. Section 2 was about Similar polygons.
Section 3 was proving triangles Similar. I thought this was kind of hard but easy at the same time. All you had to do was set the numbers on the figure to a proportion and cross multiply them. Section 4 was about Similarity in the right triangles. In this section you had to use Pythagorean theorem on some of the triangles. Section 5 was about Proportions in triangles.
I thought this Chapter was pretty easy. I didn’t get some of the stuff but with a little help I got it. I think I will do ok on the test. But I heard it was hard!
January 23, 2013 at 2013-01-23T22:01:51+00:00 10:01 pm
In cahpter 7 we leared aloty of news and challenging things. In section one we learned about ratios and porportions.A ratio is a comparison of two quantities. While a porportion is a statement that two ratios are equal. THere is also an extended porportion which is were there are three or more ratios equal to each other.
In section two we learned about similar polygons.Two polygons are similar if corresponding angles are congruent and corresponding sides are porportional. THe ratio of the lengths of corresponding sides is the similarity ratio.We also learned about the golden rectangle and the golden ratio. A golden rectangle is a rectangle that can be divided into a square and a rectangle that is similar to the origial rectangle.The golden ratio is the ratio of the length to the width.
Then we started proving triangles are similar. Postulate 7-1 Angle-Angle similarity (AA~).If two angles of one triangle are congruant to two angles of another triangle,then the traingles are similar.
This chapter was very challenging. There was alot of new things that i havent done done. I liked cross multiplying the most it was not only easy but it was diffrent.
January 25, 2013 at 2013-01-25T13:22:22+00:00 1:22 pm
Ratios and Proportions- This section wasn’t hard just because all it was, was proportions. In ratios and proportions you just put the numbers as a fraction and then just cross multiply. On of the numbers needs to be a variable. It wasn’t that hard just mostly review on some algebra stuff.
Similarites are if a shape is similar. its symbol is a squiggly horizontal line. i like to draw it. you have to do some cross multiplication stuff.
Then we learned how to prove triangles similar with AA, SAS, and SSS. Then we learned how to simplify radicals and how to apply them with the geometric mean in section 4. We used altitude, Pythagorean Theorem, and the hypotenuse to find the lengths of the sides in three triangles. Then we finished the chapter with proportions in triangles.
I didn’t have much problem with the first section of Chapter 7. It was the 2nd section was a little harder for me to grasp. Section 3 I am having a hard time to grasp, thougth when we got to section 4 it got a little better.
February 4, 2013 at 2013-02-04T23:21:36+00:00 11:21 pm
Chapter seven was over similarity. In 7-1 we learned about ratios and proportions. You set up a proportions an then cross multiple. This was review from algebra. 7-2 was about similar polygons. If the polygons are similar they use this symbol (~) or the similar symbol.
In lesson 7-3 we learned about proving triangles similar. You have to use the AA postulate, SAS theorem, and SSS theorem. This was kind of like proofs but we didnt write it out. We used indirect measurement to find similarity. This is when you can use similar triangles and measurements to find distances that are difficult to measure directly.
In 7-4 we learned the similarity in right triangles. We used the geometric mean. We crossed multiples then took the square root of the number and then wrote it in simplest radical form. 7-5 was over proportion in triangles. You had to set up a proportions based on the lengths of the triangles given.
This chapter was okay. Some of it I didn’t get from not being there. But once I asked you I got it. I hope I do good on this test!