Angles of Polygons

Find the missing angle.

• 75
• 85
• 100
• 45

Tags

CCSS.HSG.C.A.3

What is the measure of ONE interior angle in a regular triangle (3 sides)?

• 15°
• 30°
• 60°
• 90°

Tags

CCSS.HSG.CO.C.10

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

• 60°
• 80°
• 108°
• 120°

Tags

CCSS.HSG.CO.D.13

What is the formula for the sum of the interior?

• S=360
• S=(n-2)180
• n=360/ext. angle
• 1 int. angle + 1 ext. angle=180

Tags

CCSS.HSG.CO.C.10

What is the sum of exterior angles of a pentagon?

• 180
• 360
• 540
• 760

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

• 135
• 180
• 145
• 190

Tags

CCSS.7.G.B.5

Find the value of X.

• 100
• 120
• 125
• 130

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7

CCSS.4.OA.A.3

The sum of the interior angles of a polygon is 3960°. How many sides does the polygon have?

• 12
• 24
• 25
• 13

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

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

• 8
• 11
• 3
• 16

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

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

• 1440°
• 900°
• 1080°
• 1260°

Tags

CCSS.7.G.B.6