A spirograph-type curve such as would be obtained by rolling around the inside of the curve described in polar coordinates as r = (1-0.4COS(9A))COS(3A) a circle with radius 0.0672 for five revolutions, the drawing point being 0.0940 from the circle's centre.
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Roulette curve 89 free icon was designed by Firkin for icons Png and presented to its users.
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4/6/2018