Interior angle: n-2*180/n where n is the sides The shape inside the star has half the amount of sides it says on the sides variable. If you're wondering what shape it draws with an odd number then, I don't actually know what happens. Maybe stick to the even numbers? If you want a star just go to 10 sides (10/2=5 = The points of the stars) This is sort of parabolic but I prefer parabolic curves. An a million sided shape is called a Megagon and a 1000,000,000 sided star is called a Megagram. There are 199,999 regular forms
Maths @PullJosh - Great Scratcher /\ | | |