Interior and Exterior and Numbers of Sides in Polygons

Solve for the missing variable.

• 255°

• 90°

• 60°

• 105°

Tags

CCSS.HSG.C.A.3

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

• S= (n-2)180

• S= (n-180)2

• S= (n-2)180/n

• S= (n - 180)2/n

What is the sum of the exterior angles of a polygon?

• 180(n-2)

• 180

• (180(n-2))/n

• 360

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

• 3960

• 360

• 15

• 4280

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

Solve for x. 

• 100

• 120

• 125

• 130

Tags

CCSS.3.MD.D.8

• 94

• 124

• 90

Determine the measure of one exterior angle in regular hexagon.

• 135°

• 360°

• 1080°

Solve for x.

• 220

• 110

• 250

• 125

Tags

CCSS.8.G.A.5

Solve for x. 

• 12

• 10

• 25

• 5