### Home > GC > Chapter 8 > Lesson 8.1.2 > Problem 8-17

8-17.

, and

*in the diagram at right. Find the measures of*

*and*

*and then find the sum of the exterior angles.*

The missing exterior angles each form a straight angle with an interior angle.

What is the measure of a straight angle?

You will need to find the angle that forms a linear pair with

If a quadrilateral can be made into two triangles, what is the sum of the interior angles of a quadrilateral?

,