In the plane, a closed curve is a curve with no endpoints and which completely encloses an area.
Closed Curve
See also
Curve, Jordan Curve, Simple CurveExplore with Wolfram|Alpha
References
Krantz, S. G. "Closed Curves." §2.1.2 in Handbook of Complex Variables. Boston, MA: Birkhäuser, pp. 19-20, 1999.Referenced on Wolfram|Alpha
Closed CurveCite this as:
Weisstein, Eric W. "Closed Curve." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/ClosedCurve.html