Question

How do you find the measure of each exterior angle of a regular 11-gon?

Answer 1

The sum of all external angles in a convex polygon is `2pi`. If this is a regular polygon with `n` vertices then

`theta n = 2pi`

https://socratic.org/questions/what-is-the-sum-of-the-exterior-angle-measures-for-an-irregular-convex-octagon#270796

so the exterior angle for a regular `11`-gon is

`theta =( 2pi)/11`