Quizizz - Area of regular polygons part 2

What is the name of the regular polygon shown?

• Hexagon

• Septagon

• Octagon

• Nonagon

What is the sum of the interior angles of the regular polygon shown?

• 1080 degrees

• 540 degrees

• 1260 degrees

• 900 degrees

What is the measure of ONE of the interior angles of the regular polygon shown?

• 120 degrees

• 135 degrees

• 180 degrees

• 900 degrees

Draw the congruent triangles formed from the center to the vertices. How many congruent triangles are there?

Mathematical Equivalence

ON

Cut each of the congruent triangles in half by drawing the apothem. How many half-triangles are there?

Mathematical Equivalence

ON

What is the sum of the central angles of the regular polygon?

• 360

• 180

• 90

• 1080

What is the measure of ONE central angle?

• 45

• 90

• 135

• 36

What is half of the measure of one central angle?

• 22.5

• 0

• 0

• 17.5

Draw the half triangle and fill in the height and angle values. Use Trigonometry to find the missing base

a

b

c

3.7279

9

22.5