Polygon Interior Angle Sum Expressions

What is the formula for the Polygon Interior Angle Sum Theorem?

Using the Polygon Interior Angle Sum Theorem, what is the interior angle sum of a  9-sided irregular polygon?

What part of the Polygon Interior Angle Sum Theorem tells you how many triangles make up a particular polygon?

• The measure of the largest interior angle

• The number of sides of the polygon

• Nothing

• The number of triangles that compose the polygon

• 20 sides

• 21 sides

• 12 sides

• 180 sides

The sum of the Exterior Angles of an Irregular Polygon must sum to what degree value?

Starting at one vertex, what is the maximum number of non-overlapping triangles that can be constructed within a 22-sided irregular polygon?

• 20

• 22

• 1

• 23