Polygons

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

• 1440°
• 900°
• 1080°
• 1260°

What is the name of a 7 sided polygon?

• hexagon
• heptagon
• octagon
• nonagon

What is the measure of ONE interior angle of a regular octagon?

• 135

• 180

• 145

• 190

What is the measure of each exterior angle in a regular octagon?

• 45

• 50

• 135

• 180

Answer explanation

check your notes

Each interior angle of a regular polygon measures 144. How many sides does the polygon have?

• 7

• 10

• 9

• 12