Quiz: Polygon Angle Sum Theorem

Find the measure of ONE interior angle of a regular nonagon.

• 360

• 140

• 1260

• 40

A polygon with six sides is called a(n) ______________.

• hexagon
• pentagon
• decagon
• septagon

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

• (n - 2)180
• (n - 1)180
• 360
• (n - 3)(180)

Find the measure of one interior angle in regular 25-gon. Round your answer to the nearest tenth if necessary.

• 164.3⁰

• 167.1⁰

• 165.6⁰

• 166.7⁰

In the Polygon Interior Angle Sum Theorem, what does $n$  represent?

• The measure of the largest interior angle

• The number of sides of the polygon

• Nothing

• The number of triangles that compose the polygon

What is the SUM of the angle measures in a 35-gon?

• 180°
• 5940°
• 1080°
• 169.71°

Find the sum of the angle measures in this polygon.

• 1080

• 540

• 1440

• 720

Find the sum of the exterior angles measures of a 21-gon. Round to the nearest tenth, if needed.

• 3420

• 360

• 3780

• 17.1

Find the sum of the angle measures for a 42-gon.

• 7560

• 7200

• 7380

• 7020

Find the measure of one exterior angle of a 205-gon. Round to the nearest 10th, if needed.

• 36540

• 178.2

• 18

• 1.7