In general, the resulting parallel projection is oblique (the rays are not perpendicular to the image plane); but in special cases result is an orthographic projection, which in this context is called an orthogonal axonometry.
The resulting parallel projection is oblique (the rays are not perpendicular to the image plane). This is in general. Result is an orthographic projection. This is in special cases. This is in general. An orthographic projection in this context is called an orthogonal axonometry.