Question

20) What is the measure of one exterior angle for the regular polygon below?

OA) 20 degrees
O B) 34 degrees
OC) 40 degrees
OD) 56 degrees

Answer 1

Angle of the interior angle=(n-2)×180/9

=(n-2)×20

=9-2×20

=7×20

=140

Therefore,

Exterior angle=180-interor angle

Exterior angle=180-140

=40°