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