Sum of the Interior Angles of a Regular Polygon

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 a polygon called if the sum of its interior angles equals 1440° ?

• Octogon

• Nonagon

• Decagon

• Dodecagon

Find the interior angle sum for the polygon shown in the diagram.

• 540

• 720

• 1440

• 360

Find the interior angle sum for the polygon shown in the diagram.

• 1080

• 1440

• 1620

• 900

Find the interior angle sum for the polygon shown in the diagram.

• 1080

• 720

• 1440

• 1620

Find the interior angle sum for the polygon shown in the diagram.

• 1620

• 900

• 540

• 360

Find the sum of the interior angles of a nonagon.

• 1260

• 900

• 1620

• 180

Solve for x. 

• 100

• 120

• 125

• 130

Tags

CCSS.3.MD.D.8

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

• 1440°

• 900°

• 1080°

• 1260°

What is the SUM of the angle measures in a hexagon (6 sides)?

• 720°

• 1080°

• 600°

• 540°