720 degrees divided by the number of segments (sides).

A square box has 4 sides. 720/4 = 45
An octagon has 8 sides 720/8 = 22.5

Pooh Bear

Sorry Pooh Bear, but I'm not following the math. When I divide 720 by 4, I get 180, and 720 /8 I get 90. What am I missing?
Jim

Ooops. I doubled when I should have halved.
Ok, try again.
180 degrees divided by number of sides.

A square box has 4 sides. 180/4 = 45
An octagon has 8 sides 180/8 = 22.5

Pooh Bear (aka Fluff For Brains)

OK, thanks. That should get me where I need to go.
Jim