C. 100°
a. 8
a. 90°
b. 98°
d. 1'15
6. What is the name of an eight-sided polygon?
a. hexagon
b. heptagon
c. octagon
d. nonagon
7. How many sides does a nonagon have?
b. 9
c. 10
d. 11
8. The measure of the interior angle of a regular polygon is 150°. How many sides does it have?
a. 11
b. 12
C. 13
d. 14
9. Two interior angles of an octagon measures 83° and 97 9. The other six angles are congruent.
Find the measure of each of the six angles.
a. 120°
b. 130°
c. 140°
d. 150°​