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What are contour lines on a contour map

A.lines above and below the equator
B.lines that run from the north pole to the south pole
C.lines that connect meridan
D.lines that connect points

1 Answer

1 vote
D.

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.
User Taran J
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