Finding Interior Angles of a Convex Polygon

What is the formula for finding ONE interior angle of a polygon?

• S= (n-2)180

• S= (n-180)2

• S= (n-2)180/n

• S= (n - 180)2/n

Find the sum of the interior angles of a nonagon.

• 1260

• 900

• 1620

• 180

Find the measure of ONE interior angle of a regular dodecagon.

• 150

• 120

• 1800

• 20

A polygon's interior angles add up to 2700.  How many sides does the polygon have?

• 17

• 15

• 19

• 11

• 9

• 10

• 8

• 7

Find the measure of angle E.

• 9°

• 97°

• 48°

• 79°

• 50°

What is the sum of the interior angles of a hexagon?

What is the sum of the interior angles of a decagon (10-sided polygon)?

Calculate the measure of angle x.

• 75

• 85

• 100

• 110

Tags

CCSS.HSG.C.A.3