Question

A regular polygon has nine sides. Calculate the size of (a) the interior angle (b) the exterior angle

Answer 1

Answer:

hope it will help

Step-by-step explanation:

interior angle = (n-2)×180÷n

                       = (9-2)×180÷9

                        = 140°

Exterior angle = 360÷n

                         = 360÷9

                          = 40