Lesson 7-3 Similar Triangles.

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Lesson 7-3 Similar Triangles

Example: Determine if the triangles are similar Yes….because the similarity statement is ∆ JKL∼∆ QPM, so ∠L≌∠M and if we find the missing angles, we discover that ∠J and∠Q both equal 48 degrees. No…..because the similarity statement is ∆ABC∼∆GFD. ∠C and ∠D are congruent, but ∠B≆∠F, so does not follow the AA similarity postulate.

Determine whether the triangles are similar Determine whether the triangles are similar. If so, write a similarity statement. Explain your reasoning.

Example: Find AE and DE. Since AB is parallel to CD,