Question

The ratio of an interior angle to an exterior angle of a regular polygon is 7:2.The number of sides of the polygon is: select one: a. 7 b. 8 c. 6 d. 9

Answer 1

Answer:

d

Step-by-step explanation:

7x+2x =180 ( linear pair)

9x=180

x=20

exterior angle =2x= 2×20

=40

number of sides = 360÷40= 9