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  3. The positive vertical plane and positive...

The positive vertical plane and positive horizontal plane makes                angle with each other in anti clockwise direction.

A. 180 degrees
B. 270 degrees
C. 0 degrees
D. 90 degrees
Answer» B. 270 degrees
Explanation: given the direction is anti- clockwise direction so the angle in 270 degrees if it is given clockwise direction the angle should be 90 degrees since the given planes are consecutive planes in planes of projection.
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