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Epicycloid Pedal Curve

\begin{figure}\begin{center}\BoxedEPSF{EpicycloidPedal.epsf scaled 750}\end{center}\end{figure}

The Pedal Curve of an Epicycloid with Pedal Point at the center, shown for an epicycloid with four cusps, is not a Rose as claimed by Lawrence (1972).


Lawrence, J. D. A Catalog of Special Plane Curves. New York: Dover, p. 204, 1972.

© 1996-9 Eric W. Weisstein