Interior & Exterior Angles of Polygons

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 sum of the exterior angles in a decagon?

• 10

• 360

• 36

• 1440

Find the measure of one exterior angle of a regular 18-gon.

• 160°

• 360°

• 20°

• 2280°

The figure is a parallelogram.  
Solve for x.  

• 1

• 11

• 7

• 6

Tags

CCSS.HSG.CO.C.11

What is the value of x?

• 132

• 66

• 114

• 48

Tags

CCSS.HSG.CO.C.11

Find the value of x.

Tags

CCSS.HSG.C.A.3

What is the sum of the measures of the interior angles of a pentagon?

What is the sum of the measures of the interior angles of a 27-gon?

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