Roulette curve 77

by Firkin - uploaded on December 11, 2015, 12:29 pm

A spirograph-type curve such as would be obtained by rolling around the outside of the curve described in polar coordinates as r = 4-cos(5A) a circle with radius 0.429 for ten revolutions, the drawing point being midway between the circle's centre and perimeter.

epicycloid epitrochoid roulette spiral spirograph
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