Angles of Polygons Review

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

• 1440°

• 900°

• 1080°

• 1260°

Solve for x

• 45

• 12

• 90

• 2

The sum of the interior angles of a polygon is 1620°.  How many sides does the polygon have?

• 8

• 11

• 3

• 16

Find the value of X.

• 100

• 120

• 125

• 130

step 1: set up an equation

step 2: Solve for x

step 3: Plug in x for each expression

step 4: Add the two answers from step 3

• 82

• 41

• 17

• 90

Tags

CCSS.HSG.CO.C.11

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°

• 80°

• 108°

• 120°

The measures of one interior angle of a regular polygon is 140^o. What is the name of the polygon?

• Decagon

• Nonagon

• Heptagon

• Hexagon

Find the measure of EACH EXTERIOR angle of a 18-gon.

• 160°

• 360°

• 20°

• 2280°

Find the value of X

• 94

• 25

• 36

• 180

Find the measure of angle E.

• 9

• 97°

• 48°

• 79°