Polygon Basics

Convex or Concave?

• Convex

• Concave

How many sides does an Heptagon have?

• 4

• 3

• 6

• 7

How many sides does a NONAGON have?

• 0

• 6

• 9

• 12

What is the formula for the sum of the interior angles of a regular polygon?

• S = (n-2)

• S = 180(n-2)

• S = 360 / n

• S = 360(n-2)

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

• 360

• 540

• 180

• 760

What is the measure of each interior angle of a regular 20-gon?

• 90

• 146

• 162

• 122

What is the measure of ONE interior angle in a regular hexagon (6 sides)?

• 60°

• 80°

• 108°

• 120°

What is the sum of the Exterior Angles of a Polygon?

• 360/n

• S = (n-2)360

• S = (n-2)180

• 360

What is the sum of Exterior Angles of a Regular Pentagon?

• 180

• 360

• 540

• 760

What is the sum of the Exterior Angles of a Regular Octagon?

• 240

• 360

• 180

• 1080