[Solved] The negative horizontal plane and positive horizontal makes angle with each other.

Civil Engineering
Engineering Graphics
The negative horizontal plane and positi...

Q.	The negative horizontal plane and positive horizontal makes angle with each other.
A.	90 degrees
B.	180 degrees
C.	120 degrees
D.	270 degrees
Answer» B. 180 degrees
Explanation: the negative horizontal plane means the part of horizontal plane which lies in 2nd quadrant. the positive and negative planes are parallel to each other so the angle between the parallel planes is always 180 degrees.

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