Finding Interior Angles of a Convex Polygon

What is the formula for finding angle sum of a polygon if n is the number of sides ?

• (n-2)x181

• (n-2)x180

• (n-1)x180

• (n-2)x360

What is the formula for the sum of the interior?

• S=360

• S=180(n-2)

• n=360/ext. angle

• 1 int. angle + 1 ext. angle=180

What is the sum of the interior angles of a convex heptagon?

• 360^o

• 1260^o

• 900^o

• 128.6^o

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

• 3960

• 360

• 15

• 4280

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

• 1440°

• 900°

• 1080°

• 1260°

The sum of 5 angles of a hexagon is 600^o.  What is the measure of the 6th angle?

• 90^o

• 120^o

• 100^o

• 60^o

Find the value of X.

• 100° 

• 110° 

• 150° 

• 168° 

What is the formula for the sum of the interior?

• S=360

• S=(n-2)180

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°

• 80°

• 108°

• 120°

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

• 1440°

• 900°

• 1080°

• 1260°