Polygon Angle-Sum Theorems

Find the sum of the interior angles of a nonagon.

• 1260
• 900
• 1620
• 180

Find the measure of ONE interior angle of a regular dodecagon.

• 150
• 120
• 1800
• 20

Tags

CCSS.HSG.CO.A.1

Find the number of sides of a regular polygon with one interior angle measuring 165⁰

• 24
• 22
• 26
• 20

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

A polygon's interior angles add up to 2700.  How many sides does the polygon have?

• 17
• 15
• 19
• 11

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.REI.A.1

Find the value of the variable(s).

• x = 88
• x = 176
• x = 90
• x = 174

Tags

CCSS.7.G.B.5

CCSS.7.EE.B.4

Challenge!! Find the value of the variable(s).

• x = 50, y = 61
• x = 100, y = 50
• x = 100, y = 61
• x = 50, y = 50

This is a regular hexagon. Find the value of x.

• 40
• 120
• 60
• 30

A polygon with six sides is called a(n) ______________.

• hexagon
• pentagon
• decagon
• septagon

Tags

CCSS.2.G.A.1

A polygon with 5 sides is called a(n) _____________.

• pentagon
• hexagon
• septagon
• quadrilateral

Tags

CCSS.2.G.A.1

A polygon with 8 sides is called a(n) __________________.

• octagon
• decagon
• heptagon
• dodecagon

Tags

CCSS.2.G.A.1