Interior Angle Sum of Polygons

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

• 1440°

• 900°

• 1080°

• 1260°

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

• 720°

• 1080°

• 600°

• 540°

What is the SUM of the angle measures in a triangle (3 sides)?

• 60°

• 90°

• 120°

• 180°

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

• 3960

• 360

• 15

• 4280

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°

• 80°

• 108°

• 120°

What is the measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°

• 108°

• 120°

• 180°

Find the interior angle sum for each polygon. Round your answer to the nearest tenth if

necessary.

• A

• B

• C

• D

If the sum of the interior angles of a polygon equals 900°, how many sides does the polygon have? 

• 7

• 9

• 10

• 12

Find the sum of the interior of angles in a 12-gon

• 1800

• 1080

• 1620

• 1260

Find the sum of the interior angles in a 15-gon

• 2000

• 2340

• 1875

• 1080