Posted by Clarissa on .
The measure of a single angle in a regular octagon is (4x + 12)°. Find the value of x. Show equations and all work that leads to your answer

Geometry 
drwls,
Each INTERNAL angle of a regular octagon is 135 degrees.
If 4x + 12 = 135, then
4x = 123
Divide both sides of the equation by 4.