7-3 Similar Triangles.

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Presentation transcript:

7-3 Similar Triangles

Theorems and Postulates P 7.1- If 2 angles of one triangle are congruent to 2 angles of another triangle, then the triangles are similar T 7.2- If the corresponding side lengths of two triangles are proportional, then the triangles are similar T 7.3- If the lengths of 2 sides of one triangle are proportional to the lengths of 2 corresponding sides of another triangle, and the included angles are congruent, then the triangles are similar

Examples Determine whether each pair of triangles is similar. If so, write a similarity statement. If not, what would be sufficient to prove the triangles similar? Explain your reasoning.

Practice Determine whether each pair of triangles is similar. If so, write a similarity statement. If not, what would be sufficient to prove the triangles similar? Explain your reasoning.

Examples ALGEBRA Identify the similar triangles. Then find each measure.

Examples ALGEBRA Identify the similar triangles. Then find each measure.