Sum of Interior Angles of Polygons

Which formula represents how to find the interior angle sum of any polygon?

• (number of sides - 2) x 180

• (number of sides + 2) x 180

• number of sides x 180

• number of sides x 360

Tags

CCSS.7.G.B.6

What is a regular polygon?

• all side lengths are the same length

• all angles are the same (equal in measure)

• only some side lengths are the same

• all side lengths are different

• only some angles are the same

Tags

CCSS.2.G.A.1

What is the SUM of the interior angles in a triangle (3 sides)?

• 60°

• 90°

• 120°

• 180°

Tags

CCSS.8.G.A.5

What is the SUM of the interior angles in a pentagon (5 sides)?

• 360°

• 90°

• 180°

• 540°

Tags

CCSS.7.G.B.6

What is the SUM of the interior angles in a nonagon (9 sides)?

• 1440°

• 900°

• 1080°

• 1260°

Tags

CCSS.7.G.B.6

Find the measure of the missing angle

• 50°

• 35°

• 100°

• 55°

Tags

CCSS.8.G.A.5

Find the value of X.

• 100
• 120
• 125
• 130

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

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

Tags

CCSS.7.G.B.6

What is the sum of the interior angles of the hexagon shown?

• 180° 
• 540° 
• 720° 
• 1080° 

Tags

CCSS.7.G.B.6