Solve for the Interior Angle of a Polygon

Find the sum of the interior angles for the polygon.

b. Find the measure of one interior angle for the regular polygon.

Find the measure of one interior angle in regular 25-gon. Round your answer to the nearest tenth if necessary.

• 164.3⁰

• 167.1⁰

• 165.6⁰

• 166.7⁰

Find the measure of one interior angle in regular pentagon. Round your answer to the nearest tenth if necessary.

• 108

• 128.6

• 120

• 144

Solve for x. 

• 100

• 120

• 125

• 130

Find the value of x.

• 540⁰

• 121⁰

• 134⁰

• 360⁰

• 9

• 10

• 8

• 7

Which formula is used to find the sum of the interior angles of a polygon?

• 180

• 360

• (n-2)180

• n(n-3)/2

Find the measure of angle E.

(a)  

Solve for x

• 45

• 12

• 90

• 2