### 5.2 Exterior Angle Sum

#### by natasha

5.2 Exterior Angle Sum powerpoint

In this lesson you will

● Find the sum of the measures of one set of **exterior angles **of a polygon

● Derive two formulas for the measure of each angle of an equiangular polygon

In Lesson 5.1, you discovered a formula for the sum of the measures of

the *interior *angles of any polygon.

In this lesson, you will find a formula for the sum of the measures of a set of *exterior *angles.

To create a set of exterior angles of a polygon, extend each side of the polygon to form one exterior angle at each vertex.

**READ: EXTERIOR ANGLE SUM**