Exterior and Interior Angles of Polygons

The sum of the interior angles of a polygon is 3960°. How many sides does the polygon have?

• 22

• 24

• 26

What is the measure of EACH exterior angle of a 21-gon?

• 360

• 17.14

• 18.94

• 18

• 94

• 124

• 90

Solve for x

• 19

• 14

• 10

• 12

What is the measure of each exterior angle of a regular 30-gon?

• 15

• 12

• 19

Solve for x

• 7

• 9

• 11

• 10

What is the sum of the measures of the interior angles of an octagon?

• 1080

• 720

• 900

• 1260

Find the angle sum of the interior angles of the polygon.

• 180° 

• 540° 

• 720° 

• 1080° 

Find the value of X

• 94

• 25

• 36

• 180

What is the SUM of the angle measures in a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°