Review what you know about the angles of polygons below.
If the exterior angle of a polygon is
, what is the interior angle?
What is the relationship between the interior and exterior angles of a polygon?
If the interior angle of a polygon is
, can it be a regular polygon? Why or why not?
Refer to the Math Notes box in Lesson 8.1.4.
Find the sum of the interior angles of a regular
To calculate the sum of the interior angles of a polygon use