Question

What are Contour Lines?
Explain briefly ;
with the help of digram!:
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Answer 1

Answer:

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. ... A topographic map with contour lines connecting places that are the same height above sea level.

Explanation:

(i) Contour lines are isolines of height. (ii) These are drawn by joining the places of equal altitude. (iii) These help in identification of land forms and their altitude from sea level. (iv) These lines also help us to understand the nature and direction of the slope.

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Answer 2

Explanation:

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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