Polygon Angles

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

Look at this convex polygon.How many triangles are formed by drawing all the diagonals from a single vertex?

• 2
• 3
• 4
• 1

Tags

CCSS.7.G.A.2

Find the value of x

• 87°
• 54°
• 101°
• 92°

Tags

CCSS.7.G.B.5

An exterior angle of a regular polygon
measures 36°. How many sides does
the polygon have? 

• 10
• 5
• 14
• 9

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.A.1

CCSS.HSA.REI.B.3

The measurement of the sum an interior
angle of a regular nonagon is 1080°

• True
• False

Find the value of x

• 141
• 150
• 135
• 163

Tags

CCSS.7.G.B.5

Find the sum of the interior of angles in a 12-gon

• 1800
• 1080
• 1620
• 1260

Find the measureof the sum of the exterior angles in a hexagon

• 360
• 180
• 720
• 540

Find the sum of interior angles in a heptagon

• 900
• 720
• 540
• 180