Question

what is contour line​

Answer 1

Answer:

Contour line:

A contour line of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f parallel to the-plane.

Answer 2

A line on a map joining points of equal heights above or below sea level is known as contour line.