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Proving triangles SIMILAR

Proving triangles SIMILAR

Author: Jonathan Heeren
Description: Know and apply properties of congruent and similar figures to solve problems and logically justify results

a) I can recognize congruent figures and justify

    congruency of two triangles.

b) I can recognize similar figures.

c) I can calculate lengths in similar figures using

    proportional reasoning including real-world


d) I can logically justify the similarity of two triangles.

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Proving triangles similar

These are the notes for proving triangles are similar.

Similarity Postulate

This a short video explaining the ways to prove triangles similar.

Similarity Proof Examples

This video walks you through a few proofs involving similar triangles.

Proving Triangles Similar


Proofs Involving similar triangles


Similarity in Quadrilaterals



This is the key for the triangle similarity proof.


Similarity Review Key