Cutting Miter Angles

I am asked how quite often how to figure out what angle a 7 sided project or 14 sided or any other number of sided project will be. The simplest way I have is to divide 360°by the number of sides. Here I will show a 7 sided figure and a 14 sided. the 7 sided is 51.43°, and the 14 sided is 25.72°,then divide that by 2 for the cut.