Sum Interior Angles Polygon

Which formula represents how to find the interior angle sum of any polygon?

• (number of sides - 2) x 180

• (number of sides + 2) x 180

• number of sides x 180

• number of sides x 360

What is the SUM of the interior angles in a pentagon (5 sides)?

• 360°

• 90°

• 180°

• 540°

What is the SUM of the interior angles in a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°

The sum of the interior angles in a polygon is 3,240^o.  How many sides are in the polygon?

• 10

• 582,840

• 18

• 20

What is the SUM of the interior angles in a triangle (3 sides)?

• 60°

• 90°

• 120°

• 180°

Find the value of X.

• 100

• 120

• 125

• 130

What is the sum of interior angles for a pentagon?

• 900

• 540

• 360

• 108

What is the sum of interior angles for a 27-gon?

• 4860

• 4500

• 3700

• 2700

Solve for x

• 94

• 25

• 36

• 180

What is the sum of interior angles for an octagon?

• 1440

• 1080

• 1800

• 135