Question

Planes which are inclined to both the reference planes are called __________

(a) vertical planes

(b) inclined planes

(c) horizontal planes

(d) oblique planes

This question was posed to me in an internship interview.

I need to ask this question from Projections on Auxiliary Planes topic in division Orthographic Projection, Projections of Lines, Planes and Solids of Civil Engineering Drawing

Answer 1

Right choice is (d) oblique planes

To explain I would say: Oblique projection is a simple type of technical drawing of graphical projection used for producing two-dimensional images of three-dimensional objects. The objects are not in perspective, so they do not correspond to any view of an object that can be obtained in practice, but the technique does yield somewhat convincing and useful images. The plane at which these activity occur refers to as Oblique planes.