Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. [image-making processes and techniques]
6. [perspective and shading techniques]
7. projection (perspective and shading technique)
8. parallel projection (technique)
9. axonometric projection (technique)

Anotations

Scope note:

Refers to a projection in which parallel lines project from the picture plane at an angle that is slanting or declining from the vertical or horizontal, as opposed to being perpendicular to the picture plane. It is distinct from "oblique perspective," in which parallel lines may appear to converge as they recede into space rather than remaining parallel.