Find Number of Sides in a Polygon Given Interior and Exterior Angles

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

If an exterior angle of a regular polygon measures 40°, how many sides does the polygon have?

• 9 sides

• 18 sides

• 4 sides

• 13 sides

An interior angle of a regular polygon measures 135⁰.  How many sides does the polygon have?

• 8

• 6

• 4

• 10

An exterior angle of a regular polygon measures 36°.  How many sides does the polygon have? 

• 10

• 5

• 14

• 45

A polygon's interior angles add up to 2700.  How many sides does the polygon have?

• 17

• 15

• 19

• 11

What is the number of sides of a regular polygon that has an interior measure of 120? 

• 5

• 6

• 7

• 8

The ratio between an exterior angle and interior angle of a regular polygon is 1:5. The number of sides of regular polygon is (a)   .

The sum of interior angles of a regular polygon is thrice the sum of its exterior angles. Find number of sides in regular polygon.

(a)  

AB, BC and CD are three consecutive sides of a regular polygon. If <BAC=20⁰ , find the number of sides in polygon.

(a)  

• 22

• 24

• 26

• 28