Measuring Sum of Interior Angles in a Polygon

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

• 1440°

• 900°

• 1080°

• 1260°

Find the angle sum of the interior angles of the polygon.

• 180° 

• 540° 

• 720° 

• 1080° 

What is the SUM of the angle measures in a hexagon (6 sides)?

• 720°

• 1080°

• 600°

• 540°

Find the angle sum of the interior angles of the polygon.

• 720°

• 900°

• 1080°

• 1260°

• a

• b

• c

• d

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

• 3240 degrees

• 3600 degrees

• 5400 degrees

• 3060 degrees

What is the sum of the interior angles inside an octagon?

• 135

• 1440

• 1080

• 2160

Find the sum of the interior angles for the polygon.

Answer explanation

What is the SUM of the angle measures in a nonagon?

• 1440°

• 900°

• 1080°

• 1260°

Mathematical Equivalence

ON