Polygon Angle Sum Quiz

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

• hexagon
• pentagon
• decagon
• septagon

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

• pentagon
• hexagon
• septagon
• quadrilateral

What is the name of the polygon?

• heptagon

• hexagon

• octogon

• nonogon

• decagon

The sum of the interior angles of a polygon is __________________ where n is the number of sides.

• (n - 2)180
• (n - 1)180
• 360
• (n - 3)(180)

Find the sum of the interior angles of a nonagon.

• 1260
• 900
• 1620
• 180

What is the formula to find one interior angle of a regular polygon?

• (n-2)180

• ((n-2)180)/360

• ((n-2)360)/n

• 360/n

• ((n-2)180)/n

Find the measure of one angle in a REGULAR octagon.

• 155

• 145

• 135

• 125

Find the measure of one interior angle in regular 25-gon. Round your answer to the nearest tenth if necessary.

• 164.3⁰

• 167.1⁰

• 165.6⁰

• 166.7⁰

The sum of the exterior angles of a polygon is __________________ where n is the number of sides.

• 360
• n
• (n - 2)180
• (n - 1)180

What is the sum of exterior angles of a pentagon?

• 180
• 360
• 540
• 760