Polygons

• 360

• 540

• 900

• 1260

What is the measure of an 18-sided polygon?

• 20

• 18

• 160

• 36

In the figure, the two adjacent polygons are regular. What is the measure of angle ABC?

• 120

• 135

• 142.5

• 150

What is the measure of angle PQR in the regular polygon?

• 40

• 60

• 72

• 108

What is the measure of angle 1?

• 56

• 62

• 72

• 76

Find the measure of angle 1.

• 20

• 48

• 72

• 132

• 60

• 90

• 120

• 240

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

• 1440°

• 900°

• 1080°

• 1260°

If the sum of the interior angles of a polygon equals 900°, how many sides does the polygon have? 

• 7

• 9

• 10

• 12

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°

• 108°

• 120°

• 180°