Question

A line of length 12 cm lies on profile plane whose ends are at a distance of 4 cm and 5 cm to vertical plane. What is the length in top view?

(a) 5 cm

(b) 12 cm

(c) 1 cm

(d) 11.9 cm

This question was addressed to me in a national level competition.

I want to ask this question from Projection of Line Contained by Plane in portion Projection of Lines of Engineering Drawing

Answer 1

The correct answer is (c) 1 cm

Explanation: Given the line is of length 12 cm present on profile plane and ends are at 4 cm and 5 cm away from vertical plane. As we imagine the projection planes we can get the top view and distance relation as given here. 5-4 =1 cm.