Contour lines of different elevations can unite to form one line,only in the case of:
AA saddle
BA hill top
CA vertical cuff
DA water shed line
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Related Questions:
Method of ranging adopted in Forest areas.
Example for derived reading in levelling work is:
Which of the following survey is used to define property line?
Indirect ranging using Theodolite is called:
A reference surface above which elevation of a point are determined is called ................. surface