The stirrup curve is the quartic curve given by the equation
Stirrup Curve
See also
Bicuspid CurveExplore with Wolfram|Alpha
References
Cundy, H. and Rollett, A. Mathematical Models, 3rd ed. Stradbroke, England: Tarquin Pub., p. 72, 1989.Cite this as:
Weisstein, Eric W. "Stirrup Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StirrupCurve.html