Interior and Exterior Angles in a Polygon

What is the sum of measures of interior angles of a 23 gon?

• 3460

• 3620

• 3780

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

• 140

• 160

• 190

What is the sum of the measures of the exterior angles of a dodecagon?

• 180

• 360

• 1440

• 144

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 sum of the interior angles of the polygon.

• 180° 
• 540° 
• 720° 
• 1080° 

Find the measure of the angle x.

• 105
• 115
• 65
• 75

Solve for a.

• 90°

• 180°

• 270°

• 80°

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