Angles and Area in a Polygon

Match the following.

• n

• one exterior angle measure of a regular polygon

• sum of the interior angle measure

• sum of the exterior angle measure

• one interior angle measure of a regular polygon

• the number of sides of a regular polygon

Answer explanation

Be sure to add your formulas to your formula sheet. "n" represents the number of sides.

What is the sum of the measures of the interior angles of a 27-gon in degrees?

What is the measure of EACH interior angle of a regular 20-gon in degrees?

• 7

• 9

• 11

• 13

To find the area of a regular polygon, we divide it into equal (a)  

• squares
• trapezoids
• triangles
• circles

The formula for finding the area of a triangle is ______

Find the area

• 96 cm²
• 48 cm²
• 36 cm²
• 48 cm

What is the PERIMETER of this hexagon?

• 2√3 in

• 2 in

• 16 in

• 24 in

Find the area of the regular polygon

• 172.0 in.²

• 170.0 in.²

• 17.2 in²

• 50 in.²