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What is the term used for an imaginary line on the ground joining points of equal elevation?

What is the term used for an imaginary line on the ground joining points of equal elevation? Correct Answer Contour

A Contour is an imaginary line on the ground joining the points of equal elevation. It is a line in which the surface of the ground is interested in a level surface.

Related Questions

The letters P, Q, R, S, T and U are to be placed one per vertex on a regular convex hexagon, but not necessarily in the same order. Consider the following statements: The line segment joining R and S is longer than the line segment joining P and Q. The line segment joining R and S is perpendicular to the line segment joining P and Q. The line segment joining R and U is parallel to the line segment joining T and Q. Based on the above statements, which one of the following options is CORRECT?
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It is an imaginary line on the ground obtained by joining points have same elivation called . . . . . . . .
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