Surveying
Which of the following angles can be set out with the help of French cross staff?

45° only
either 45° or 90°
any angle
90° only

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Surveying
Pick up the correct statement for horizontal photographs.

Parallel lines do not appear parallel in central projection
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

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