Name _________________________

9.5 Triangle Sum Theorem

Determine  in each triangle.

7. 

8. Two interior angles of a triangle measure  and . What is the third interior angle of the triangle?

9. Two interior angles of a triangle measure  and . What is the third interior angle of the triangle?

10. Two interior angles of a triangle measure  and . What is the third interior angle of the triangle?

Find the value of  and the measure of each angle.

11. 

12. 

13.