Question

What is the measure of one interior angle of a regular convex 31-gon

Answer 1

The sum of all the angles in a side with n sides is
(n-2)180

n = 31

(31 - 2)(180)
= 5220

Divide that by the number of sides

5220/31
≈ 168.39

Each interior angle has a measure of about 168.39 degrees.

Have an awesome day! :)