Surveying
Pick up the incorrect statement from the following. The angular distance of heavenly bodies on observer's meridian measured from the pole, is

Co-altitude
Polar distance
Co-latitude
Co-declination

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Surveying
The necessary geometrical condition for triangulation adjustment is:

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°
The sum of the three angles of a plane triangle should be 180°

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