1. S ECTIONS 6.4 & 6.5 – P ROVING S IMILAR T RIANGLES HW #27 Pg. 384 #10, 12, 14, 16, 20 Pg. 392 #6, 28

2. AA S IMILARITY P OSTULATE If two angles of one triangle are congruent to two angles in another triangle, then the two triangles are similar.

3. SSS S IMILARITY T HEOREM If the corresponding side lengths of two triangles are proportional, then the triangles are similar.

4. SAS S IMILARITY T HEOREM If an angle of one triangle is congruent to an angle of a second triangle and the lengths of the sides including these angles are proportional, then the triangles are similar.

5. E XAMPLE Determine if the two triangles are similar. If they are, write a similarity statement.

6. E XAMPLES Justify that the two triangles are similar.

7. E XAMPLE

10. U SING S IMILARITY