Angles of regular polygons

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 a polygon called if the sum of its interior angles equals 1440° ?

• Octogon
• Nonagon
• Decagon
• Dodecagon

Tags

CCSS.5.G.B.4

What is the value of x?

• 26.25
• 38.75
• 24
• 25.125

Tags

CCSS.7.EE.B.3

CCSS.7.EE.B.4

CCSS.7.G.B.5

Find the value of x

• 87°
• 54°
• 101°
• 92°

Tags

CCSS.7.G.B.5

Find the value of x

• 141
• 150
• 135
• 163

Tags

CCSS.7.G.B.5

Find the value of one angle measurein a pentagon

• 108
• 60
• 120
• 135

Tags

CCSS.7.G.B.5

What is the sum of the exterior angles of a decagon

• 1440
• 360
• 540
• 720

Find the sum of interior angles in a heptagon

• 900
• 720
• 540
• 180

Find one interior angle in a heptagon

• 128.57
• 108
• 120
• 135

Tags

CCSS.7.G.B.5

How many of the following polygons are CONCAVE?

• All are concave
• 1 is concave
• 2 are concave
• None are concave

Tags

CCSS.2.G.A.1