The evolute of a circle is a degenerate point at the origin.
Circle Evolute
See also
Circle, Circle Involute, EvoluteExplore with Wolfram|Alpha
References
Gray, A. Modern Differential Geometry of Curves and Surfaces with Mathematica, 2nd ed. Boca Raton, FL: CRC Press, p. 99, 1997.Lauwerier, H. Fractals: Endlessly Repeated Geometric Figures. Princeton, NJ: Princeton University Press, pp. 55-59, 1991.Steinhaus, H. Mathematical Snapshots, 3rd ed. New York: Dover, p. 137, 1999.Referenced on Wolfram|Alpha
Circle EvoluteCite this as:
Weisstein, Eric W. "Circle Evolute." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CircleEvolute.html