Contour lines are imaginary lines

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Contour lines are imaginary lines that represent the highs and lows of the Earth's surface. They are used to create longitudinal and transverse sections to check the heights and depressions of different areas on the ground, as well as to calculate the sizes of places. Contour lines are drawn on topographic maps, and the shoreline separates the waters of different bodies of water. Contour lines are also used for navigation and recreation, because they provide a visual representation of terrain.

Contour lines are imaginary lines that represent the elevation of the Earth's surface. Usually drawn on topographic maps, lines separate areas of different elevations. Contour lines can be used to calculate site area, surface volume, and create longitudinal and transverse sections to check the heights and depressions of different areas on the ground.