Interior Angles of Polygons

What is the sum of the interior angles of a pentagon?

• A) 360°

• B) 540°

• C) 720°

• D) 900°

A regular hexagon has how many degrees in each of its interior angles?

• 130°

• 120°

• 135°
  

• 150°

Tags

CCSS.HSG.CO.C.10

How many sides does a polygon have if the sum of its interior angles is 1080°?

• 8

• 10

• 12

• 14

In a quadrilateral, if three angles measure 85°, 95°, and 75°, what is the measure of the fourth angle?

• 105

• 85

• 105

• 115

Tags

CCSS.HSG.C.A.3

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

• 128

• 168

• 156

• 144°

A regular dodecagon has how many degrees in each of its interior angles?

• 150

• 165

• 120

• 110

What is the sum of the interior angles of a heptagon?

• 540°

• 720°

• 900°

• 1080°

If a regular polygon has an interior angle of 156°, how many sides does it have?

• 10

• 14

• 16

• 12

In a triangle, if one angle measures 40° and another measures 60°, what is the measure of the third angle?

• 70°

• 100°

• 80°

• 90°

Tags

CCSS.8.G.A.5

What is the measure of each interior angle of a regular 15-sided polygon?

• 120°

• 170°

• 156°

• 180°