### Home > GB8I > Chapter 9 Unit 10 > Lesson INT1: 9.1.1 > Problem 9-12

9-12.

For each figure below, determine if the two smaller triangles in each diagram are congruent. If so, write an appropriate triangle congruence statement (you do not have to make a flowchart). Then solve for . If the triangles are not congruent, explain why not.

Each set of triangles is congruent. Now show why or how.

Congruent because of

, .

Congruent because of

, .