Surveying
The height displacement on a vertical photograph

Increases as the horizontal distance increases from the principal point
Decreases as the flying height increases
Increases as the ground elevation increases
All listed here

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Surveying
The necessary geometrical condition for triangulation adjustment is:

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

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Surveying
The prismatic compass and surveyor’s compass

both give QB of a line
both give WCB of a line
give whole circle bearing (WCB) of a line and quadrantal bearing (QB) of a line respectively
both give QB of a line and WCB of a line

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