A curve in two dimensions on which the value of a function is a constant. Other synonymous terms are equipotential curve, isarithm, and isopleth. A plot of several contour lines is called a contour plot.

# Contour Line

## See also

Contour, Contour Plot, Equipotential Curve## Explore with Wolfram|Alpha

## Cite this as:

Weisstein, Eric W. "Contour Line." From
*MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/ContourLine.html