Question

what is contour lines on topo sheet?​

Answer 1

Explanation:

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.

Answer 2

Answer:

Contour lines are lines drawn on a map connecting points of equal elevation. Contour lines show both the elevation and illustrate the shape of the terrain.