Exterior and Interior Angles of Polygons

What is the measure of ONE interior angle in a regular pentagon (all sides and angles are congruent)?

• 90°

• 108°

• 120°

• 180°

Solve for a.

• 90°

• 180°

• 270°

• 80°

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

• 23

• 24

• 25

What is the sum of measures of interior angles of a 23 gon?

• 3460

• 3620

• 3780

What is the measure of EACH interior angle of a regular 18 gon?

• 140

• 160

• 190

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

Solve for x

• 15

• 16

• 17