For mapping any country
A. Geodetic triangulation of greatest possible sides and accuracy is carried out
B. Primary triangles are broken down into secondary triangles of somewhat lesser accuracy
C. Secondary triangles are further broken into third and fourth order triangles, the points of which are used for detail surveys
D. All the above
Answer: Option D
This Question Belongs to Civil Engineering >> Surveying
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B. 600 mm × 750 mm
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