Math 2C 6.3

What is the formula for the sum of interior angles in a polygon?

• 180(n−2)
• 180(n−2)÷n
• 360
• 360/n

Find the sum of the interior angles of this polygon.

• 180 degrees

• 360 degrees

• 540 degrees

• 720 degrees

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

• 1440°
• 900°
• 1080°
• 1260°

What is the measure of EACH interior angle of a regular 18 gon?

• 140

• 160

• 190

Find the value of X.

• 100
• 120
• 125
• 130

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

What is the sum of interior angles for a pentagon?

• 900
• 540
• 360
• 108

What is the sum of interior angles for an octagon?

• 1440
• 1080
• 1800
• 135