What do you understand by V.I. and H.E.?
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V.I. stands for vertical interval. It is the vertical distance between any two contour lines.
H.E. stands for horizontal equivalent. It is the actual distance between two points on two contour lines.
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What advantages do contours have over hill-shading and hachuring?
How do contour lines show different slopes of land?
Give two points of difference between Bench Mark and Spot Height.
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