Polygon Interior Angles

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

• 1440°
• 900°
• 1080°
• 1260°

Tags

CCSS.7.G.B.6

What is the sum of the interior angles for a 24-gon

• 3960

• 360

• 15

• 4280

Is the figure a polygon? Is it convex or concave?

• Not a polygon, convex
• Polygon, convex
• Not a polygon
• Polygon, concave

Tags

CCSS.2.G.A.1

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

Find the value of X

• 94
• 25
• 36
• 180

Tags

CCSS.7.G.B.5

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 measure of ONE interior angle in a regular pentagon (5-sides)?

• 90°
• 108°
• 120°
• 180°

Tags

CCSS.4.MD.C.5

CCSS.4.MD.C.7

CCSS.4.MD.C.6

If the sum of the interior angles of a polygon equals 900°, how many sides does the polygon have? 

• 7
• 9
• 10
• 12

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

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

• 180(n−2)
• 180(n−2)÷n
• 360
• 360/n

Tags

CCSS.7.G.B.6

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

• 4860
• 4500
• 3700
• 2700