Surveying
The type of surveying which requires least office work is

trigonometrical levelling
theodolite surveying
tacheomefry
plane table surveying

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Surveying
The necessary geometrical condition for triangulation adjustment is:

The sum of the three angles of a plane triangle should be 180°
All listed here
The sum of the eight angles of a braced quadrilateral should be 360°
The sum of the angles around a station should be 360°

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