Interior Angle Sum Expressions

What is a polygon?

• A plane shape with straight lines

• An enclosed plane shape with three or more straight lines

• a shape that has a vertex

What is the sum of interior angles of a nonagon?

• 1260^o

• 1080^o

• 360^o

• 900^o

Find the sum of the interior angles of this polygon

• 180^o

• 1080^o

• 720^o

• 540^o

Find the missing angle labeled x.

• 105^o

• 115^o

• 75^o

• 65^o

Find the missing angle labeled x

• 45^o

• 100^o

• 85^o

• 75^o

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

• 360^o

• 2400^o

• 3960⁰

• 4500^o

How many sides does a heptagon have?

• 4-sides

• 6- sides

• 7- sides

• 10- sides

What is the sum of interior angles for a 36-gon?

• 3400^o

• 6100^o

• 6210^o

• 6120^o

Calculate the missing angle.

• 130⁰

• 125^o

• 100^o

• 120^o

Calculate the sum of interior angles of a polygon with 20 sides.

• 3000^o

• 3240^o

• 1500^o

• 1820^o