5/8/25 Interior & Exterior Polygons

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

• 180
• 360
• 3240
• 162

Find the value of x

• 141
• 150
• 135
• 163

The sum of the exterior angles of a polygon is __________________ where n is the number of sides.

• 360
• n
• (n - 2)180
• (n - 1)180

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

• 1440°
• 900°
• 1080°
• 1260°

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°

Find the angle Find the angle sum of the interior angles of the polygon. of the polygon.

• 720° 
• 900° 
• 1080° 
• 1260° 

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

• 135

• 180

• 145

• 190

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

• 180(n−2)
• 180(n−2)÷n
• 360
• 360/n

Solve for x

• 80
• 110
• 17
• 60