Polygon Exterior Angle Theorem

What is the measure of each exterior angle of a regular dodecagon (12-sided polygon)?

• 30 degrees

• 45 degrees

• 60 degrees

• 15 degrees

Find the measure of ONE exterior angle of a regular decagon.

• 36

• 10

• 18

• 40

What is the sum of the exterior angles of a 20-gon?

• 180

• 360

• 3240

• 162

What is the sum of the exterior for a nonagon?

• 180

• 1260

• 360

• 9

Find the measure of one exterior angle of a regular 18-gon.

• 160°

• 360°

• 20°

• 2280°

If an exterior angle of a regular polygon has a measure of 36 degrees, how many sides does it have?

• 10

• 3

• 7

• 11

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

• 360

• n

• (n - 2)180

• (n - 1)180

Find the value of X.

• 60

• 120

• 85

• 55

Find the measure of one exterior angle in the regular polygon. Round your answer to the nearest tenth if necessary.

• 32.7⁰

• 90⁰

• 45⁰

• 60⁰

What is the sum of the measures of the exterior angles of a decagon?

• 1440⁰

• 360⁰

• 144⁰

• 1800⁰