Question

The perpendicular edges of planes parallel to projection plane are drawn at an angle of 30, 45, 60 degrees with the horizontal. The inclined lines are called _____________

(a) projectors

(b) slanting edges

(c) contour lines

(d) receding lines

This question was addressed to me during an interview.

My doubt is from Oblique Projections in section Oblique & Perspective Projection of Engineering Drawing

Answer 1

Right choice is (d) receding lines

Explanation: Projectors are the imaginary lines drawn from object to projection planes. Slanting edges can be used for edges of pyramid etc. The perpendicular edges of planes parallel to projection plane are drawn at an angle of 30, 45, 60 degrees with the horizontal. The inclined lines are called receding lines.