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I know all of the different ways that you can prove a triangle similar, but somehow it doesn't translate over to quadrilaterals. For example, SSSS similarity doesn't work for quadrilaterals. How would I know whether or not a quadrilateral is similar or not? What are some rules? In addition, is there a rules for pentagons, hexagons, octagons and so on? What are these? Is there any generalized way to prove that they are similar?

 Mar 5, 2021
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Hello AngleObtuse!

 

I'm also learning about similar shapes in class. :))

The reason having the angles the same doesn't translate over to quadrilaterals is because a square and a non square rectangle would have all 90 degree angles, but not similar side lengths. 

I think the only way to prove that they're similar is to check that corresponding angles are congruent and corresponding sides are proportional.

I hope this helped. 

 

=^._.^=

 Mar 5, 2021

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