What is the measure of the dent angle for a star-shaped polygon with 8 points and a point angle of 20 degrees?

2 answers

star polygon with n points and point angle, X, has a dent angle of:
dent angle = (360/n) + X

therefore, n=6 and X=20:
dent angle = (360/6) + 20 = 80
This would be 80º.
star polygon with n points and point angle, X, has a dent angle of:
dent angle = (360/n) + X

therefore, n=8 and X=20:
dent angle = (360/8) + 20 = 65
This would be 65 º.