Question

In addition to the top view of the visual rays, use of vanishing points of straight lines is made in this method. What is this method?

(a) Watching method

(b) Vanishing point method

(c) Visual-ray method

(d) Perspective method

This question was addressed to me in my homework.

My doubt is from Definitions and Methods of Perspective Projections topic in chapter Oblique & Perspective Projection of Engineering Drawing

Answer 1

Right choice is (b) Vanishing point method

For explanation: In a visual-ray method, points on the perspective are obtained by projecting the top view and either the front view or the side view of visual rays. In addition to the top view of the visual rays, use of vanishing points of straight lines is made in Vanishing point method.