Epispiral
Epispiral
The epispiral is a plane curve with polar equation
| r=asec(ntheta). |
There are n sections if n is odd and 2n if n is even.
EpispiralAbs
A slightly more symmetric version considers instead
| r=a|sec(ntheta)|. |
See also
Cotes' Spiral, Kampyle of EudoxusExplore with Wolfram|Alpha
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References
Lawrence, J. D. A Catalog of Special Plane Curves. New York: Dover, pp. 192-193, 1972.Referenced on Wolfram|Alpha
EpispiralCite this as:
Weisstein, Eric W. "Epispiral." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Epispiral.html