Question

A line of length 15 dm lies on vertical plane whose ends are at a distance of 5 dm and 7 dm to horizontal plane. What is the length in side view?

(a) 7

(b) 14.8

(c) 15

(d) 2

The question was asked in homework.

Origin of the question is Projection of Line Contained by Plane topic in section Projection of Lines of Engineering Drawing

Answer 1

The correct choice is (d) 2

The explanation: Given the line is of length 15 dm present on vertical plane and ends are at 5 and 7 dm away from horizontal plane at right angles. As we imagine the projection planes we can get the side view and distance relation as given here. 7-5 =2 dm.