Question

a. What is a contour line?​

Answer 1

Answer:

Explanation:

Contour line, a line on a map representing an imaginary line on the land surface, all points of which are at the same elevation above a datum plane, usually mean sea level. ... The diagram illustrates how contour lines show relief by joining points of equal elevation.

Answer 2

Answer:

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.

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