Free Printable Sum of Interior and Exterior Angles

Worksheets

Name

Class

Date

What is the formula for the sum of interior angles in a polygon?

180(n−2)

180(n−2)÷n

360

360/n

What is the sum of interior angles for a pentagon?

900

540

360

108

What is the sum of interior angles for an octagon?

1440

1080

1800

135

What is the sum of interior angles for a 16-gon?

2880

2520

1600

157.5

Find the value of x.

120

135

30.6

What is the total angle measure of all three angles in a triangle?

The following polygon is a Regular Pentagon. Find the measure of EACH EXTERIOR angle of the polygon.

50°

55°

72°

355°

Solve for x.

220

110

250

125

Solve for x.

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