info prev up next book cdrom email home

Astroid Evolute

\begin{figure}\begin{center}\BoxedEPSF{AstroidEvolute.epsf scaled 500}\end{center}\end{figure}

A Hypocycloid Evolute for $n=4$ is another Astroid scaled by a factor $n/(n-2)=4/2=2$ and rotated $1/(2\cdot 4)=1/8$ of a turn.



© 1996-9 Eric W. Weisstein
1999-05-25