Civil Engineering - Advanced Surveying - Discussion

28. 

The principal line is the line joining the principal point and

[A]. nadir
[B]. isocentre
[C]. perspective centre
[D]. none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.