There are two different unknown parts for question number 1. The first task is to find the measure of the EXTERIOR angle marked 'x'

For question number 1, what is the measure of the missing angle?

What is the measure of angle E which has a question mark at it?

For question number 3, what is the measure of angle 11 which is an interior angle?

A regular octagon is shown. This means that all angles are congruent and all sides are congruent. What is the measure of one angle