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Similart triangles help from bunnel needed

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Similart triangles help from bunnel needed [#permalink] New post 22 Dec 2012, 21:41
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I am not able to understand how to find the corresponding sides in similar triangles.
Bunnel can you explain with an example how to identify the corresponding sides in similar triangle
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Re: Similart triangles help from bunnel needed [#permalink] New post 23 Dec 2012, 04:34
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Please post a question that refers to your concern, in that way we can help you to understand better the concept behind.

otherwise, this question is not of much help for the other students :)

Quote:
Similar Triangles Triangles in which the three angles are identical.

• It is only necessary to determine that two sets of angles are identical in order to conclude that two triangles are similar; the third set will be identical because all of the angles of a triangle always sum to 180º.
• In similar triangles, the sides of the triangles are in some proportion to one another. For example, a triangle with lengths 3, 4, and 5 has the same angle measures as a triangle with lengths 6, 8, and 10. The two triangles are similar, and all of the sides of the larger triangle are twice the size of the corresponding legs on the smaller triangle.
• If two similar triangles have sides in the ratio , then their areas are in the ratio


See triangle
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Re: Similart triangles help from bunnel needed [#permalink] New post 23 Dec 2012, 04:38
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Hii skamal.
Are you confused with the concept shared by Bunuel in the circle question, in which we were supposed to find the diameter of the circle?
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Re: Similart triangles help from bunnel needed [#permalink] New post 23 Dec 2012, 06:37
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skamal7 wrote:
I am not able to understand how to find the corresponding sides in similar triangles.
Bunnel can you explain with an example how to identify the corresponding sides in similar triangle


Corresponding sides are opposite the corresponding angles. Corresponding angles are marked in the diagram below:
Image

Check for more here: math-triangles-87197.html
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Re: Similart triangles help from bunnel needed [#permalink] New post 21 Sep 2014, 07:50
Bunuel wrote:
skamal7 wrote:
I am not able to understand how to find the corresponding sides in similar triangles.
Bunnel can you explain with an example how to identify the corresponding sides in similar triangle


Corresponding sides are opposite the corresponding angles. Corresponding angles are marked in the diagram below:
Image

Check for more here: math-triangles-87197.html




Hello Bunuel.
As per the AA postulate, aren't triangles ABC, CBH, ACH similar? This is confusing because in your post on Triangles you have mentioned that ABC, CHB and CHA are similar. Can you please help?

Thanks.
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Re: Similart triangles help from bunnel needed [#permalink] New post 21 Sep 2014, 10:26
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p2bhokie wrote:
Bunuel wrote:
skamal7 wrote:
I am not able to understand how to find the corresponding sides in similar triangles.
Bunnel can you explain with an example how to identify the corresponding sides in similar triangle


Corresponding sides are opposite the corresponding angles. Corresponding angles are marked in the diagram below:
Image

Check for more here: math-triangles-87197.html




Hello Bunuel.
As per the AA postulate, aren't triangles ABC, CBH, ACH similar? This is confusing because in your post on Triangles you have mentioned that ABC, CHB and CHA are similar. Can you please help?

Thanks.


Aren't those the same triangles? Or do you mean that the order is different? Then, yes: ABC, CBH, ACH are similar.
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Similart triangles help from bunnel needed [#permalink] New post 21 Sep 2014, 10:32
The triangles are same, but the order matters right? Because if you have to take a ratio of the corresponding sides to find the length of the unknown side then it is important that we write the triangles in that specific order - correct? Thanks for your help Bunuel

Last edited by p2bhokie on 21 Sep 2014, 10:32, edited 1 time in total.
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Re: Similart triangles help from bunnel needed [#permalink] New post 21 Sep 2014, 10:32
The triangles are same, but the order matters right? Because if you have to take a ratio of the corresponding sides to find the length of the unknown side then it is important that we write the triangles in that specific order - correct? Thanks for your help Bunuel..
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Re: Similart triangles help from bunnel needed [#permalink] New post 25 Sep 2014, 20:41
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p2bhokie wrote:
The triangles are same, but the order matters right? Because if you have to take a ratio of the corresponding sides to find the length of the unknown side then it is important that we write the triangles in that specific order - correct? Thanks for your help Bunuel..


Triangles CBH and CHB are the same. There are two ways in which you can find the corresponding sides.

Method 1: Identify that the triangles are similar. Look for corresponding angles (i.e. angles which are equal) and note the sides opposite to them. The ratio of these sides will be a constant. Here, name of the triangle is immaterial.

Method 2: Identify the triangles that are similar and write them in order i.e. triangle ABC is similar to triangle CBH so angle A will equal angle C, angle B will equal angle B and angle C will equal angle H. Now you can just look at the triangle names and write the corresponding sides:
AB/CB = BC/BH = AC/CH

Both methods are correct. In one, you work later, in the other you work before.
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Re: Similart triangles help from bunnel needed   [#permalink] 25 Sep 2014, 20:41
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