Surveying
The declination and right ascension of the sun becomes 23° 27' S and 270° respectively on

March 21
December 22
June 21
September 21

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Surveying
Pick up the correct statement for horizontal photographs.

All listed here
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

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