Polygon Sums Interior and Exterior

What is the formula for the sum of interior angles in a polygon?

• 180(n−2)

• 180(n−2)÷n

• 360

• 360/n

Solve for x

• 80

• 110

• 17

• 60

Find the exterior angle on a regular polygon with 5 sides...

• 72^o

• 108^o

• 60^o

• 120^o

Find the interior angle on a regular polygon with 6 sides...

• 72^o

• 108^o

• 60^o

• 120^o

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

• 3240 degrees

• 3600 degrees

• 5400 degrees

• 3060 degrees

Find the exterior angle on a regular polygon with 10 sides...

• 36^o

• 144^o

• 30^o

• 150^o

Find the interior angle on a regular polygon with 12 sides...

• 36^o

• 144^o

• 30^o

• 150^o

Find the number of sides on a regular polygon with an exterior angle of 15^o...

• 18

• 20

• 15

• 24

Find the number of sides on a regular polygon with an interior angle of 160^o...

• 2.25

• 18

• 20

• 24

Find the number of sides on a regular polygon with an interior angle of 120^o...

• 3

• 6

• 8

• 9