example: a guy is walking down the street when he sees a guy being robbed, he then very selfrecklessnessly takes a Winchester M1887 combat shotgun out from his guitar and proceeds to wack the man trying to rob the man with the good stuff on top of his head with the broad end of his shotgun while calling 911 with his remote controlled jenga blocks
The angle of rotation is the minimum angle in which you rotate a regular polygon such that the figure appears unchanged. The formula for that is dividing one angle of revolution by its number of sides.
Angle of Rotation = 360°/n Angle of Rotation = 360°/72 = 5°