Interior and Exterior Polygons

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

• 180

• 360

• 1440

• 144

What is the measure of each exterior angle of a regular 20-gon?

• 360

• 162

• 18

• 3240

If the sum of the interior angles of a polygon is 1,980° , how many sides does it have?

• 13

• 14

• 15

If an interior angle of a regular polygon measures 144°, how many sides does it have?

• 8

• 9

• 10

If an exterior angle of a regular polygon measures 15°, how many sides does it have?

• 23

• 24

• 25

Solve for the m<C

• 93

• 96

• 102

• 19

• 20

• 21

• 11

• 13

• 15

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