Surveying
For a line AB

the forebearing of AB and back bearing of AB differ by 180°
none is correct
both (A) and (B) are correct
the forebearing of AB and back bearing of BA differ by 180°

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Surveying
Pick up the correct statement for horizontal photographs.

The two sides of a road meet at the vanishing point
The lines parallel to the negative plane are projected as parallel lines
All listed here
Parallel lines do not appear parallel in central projection

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