### Home > CCG > Chapter 8 > Lesson 8.1.5 > Problem 8-53

8-53.

The exterior angle of a regular polygon is

What is the measure of an interior angle of this polygon? Show how you know.

The interior and exterior angles are supplementary.

How many sides does this polygon have? Show all work.

Refer to the Math Notes box in this lesson.

The sum of the measures of the exterior angles is

.