Polygons and Angles

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

• 1440°
• 900°
• 1080°
• 1260°

The sum of the measures of the interior angles of a regular polygon is 720 degrees. How many sides does the polygon have?

• 6

• 7

• 5

• 8

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

• 60°
• 90°
• 120°
• 180°

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

• 90°
• 108°
• 120°
• 180°

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 triangle (3 sides)?

• 15°
• 30°
• 60°
• 90°

What is the name of a 7 sided polygon?

• hexagon
• heptagon
• octagon
• nonagon

What is the measure of EACH EXTERIOR angle of a regular 67-gon?

• 5.4

• 11700

• 3.2

• 113

Find the measure of EACH EXTERIOR angle of a 18-gon.

• 160°

• 360°

• 20°

• 2280°

What is the measure of EACH EXTERIOR angle of a 20-gon?

• 14°

• 15°

• 17°

• 18°