Find the Interior Sum of Polygon

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

• 1440°

• 900°

• 1080°

• 1260°

What is the sum of the interior angles for a 24-gon?

• 3960

• 360

• 15

• 4280

If the sum of the interior angles is 3600°, what is the name of the polygon?

• 15-gon

• 18-gon

• 22-gon

• decagon

Find the sum of the interior angle measures of a convex 20-gon.

• 3240 degrees

• 3600 degrees

• 5400 degrees

• 3060 degrees

What is the sum of the measures of all the interior angles of a triangle?

• 120°

• 180°

• 240°

• 360°

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.

• 1440

• 2340

• 900

• 1800

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.

• 1080

• 1440

• 1620

• 900

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

• (n - 2)180

• (n - 1)180

• 360

• (n - 3)(180)