A spirograph-type curve such as would be obtained by rolling around the outside of an ellipse (major and minor axes of 2 and 1 respectively) a circle with radius 0.185 for three revolutions, the drawing point being midway between the circle's centre and perimeter.
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Roulette curve 13 free icon was designed by Firkin for icons Png and presented to its users.
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9/15/2017