12/5 Warm Up

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

• 1440°
• 900°
• 1080°
• 1260°

Find the missing angle.

• 75
• 85
• 100
• 45

What is the sum of exterior angles for a 27-gon?

• 4860

• 4500

• 360

• 270

What is the formula for one exterior angle in a regular polygon?

• 180(n−2)

• 180(n−2)÷n

• 360

• 360/n

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

• 180(n−2)

• 180(n−2)÷n

• 360

• 360/n

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

• 135

• 180

• 145

• 190

What is the SUM of the exterior angles of a 20-gon?

• 180

• 360

• 3240

• 162