Surveying
The necessary geometrical condition for triangulation adjustment is:

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

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Surveying
Transit rule of adjusting the consecutive coordinates of a traverse is used where

All of these
linear and angular measurements of the traverse are of equal accuracy
linear measurements are more accurate than angular measurements
angular measurements are more accurate than linear measurements

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Surveying
The rise and fall method

is not suitable for levelling with tilting levels
is less accurate than height of instrument method
quicker and less tedious for large number of intermediate sights
provides a check on the reduction of intermediate point levels

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