The fundamental principle of chain surveying is:
Choose the correct answer
Based on angle measurement at every point
Area divided into triangles located by measuring linear distances only (chain/tape)
Requires theodolite at every station
Uses aerial photographs
Correct Answer
B. Area divided into triangles located by measuring linear distances only (chain/tape)
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Chain surveying: works by dividing the area into a network of triangles (trilateration). Triangles are chosen because they are the only rigid geometric figure — a triangle is uniquely defined by its three sides. Tie lines and offset lines locate details. Suitable for small areas with simple topology.
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