Parallel Projections

Orthographic:Direction of projection is orthogonal to the projection plane.

Elevations: Projection plane is perpendicular to a principle axis.

Front

Top (Plan)

Side

Axonometric: Projection plane is not orthogonal to a principle axis.

Isometric: Direction of projection makes equal angles with each principle axis.

Oblique: Direction of projection is not orthogonal to the projection plane; projection plane is normal to a principle axis.

Cavalier: Direction of projection makes a 45deg. angle with the projection plane.

Cabinet: Direction of projection makes a 63.4deg. angle with the projection plane.