Measuring Sum of Interior Angles in a Polygon

What is the formula for the sum of the interior?

• S=360

• S=(n-2)180

• n=360/ext. angle

• 1 int. angle + 1 ext. angle=180

Find the measure of angle E.

• 9

• 97°

• 48°

• 79°

Calculate the sum of the interior angle measures of a polygon with 25 sides.

• 360 degrees

• 4500 degrees

• 335 degrees

• 4140 degrees

Find the value of x

• 141

• 150

• 135

• 163

Find the sum of the interior of angles in a 12-gon

• 1800

• 1080

• 1620

• 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 for a      24-gon

• 3960

• 360

• 15

• 4280

Find the value of x

• 87°

• 54°

• 101°

• 92°

What is the value of x?

• 26.25

• 38.75

• 24

• 25.125

Find the value of X.

• 60

• 120

• 85

• 55