An orthographic view taken so that the lines of sight are not parallel to the main projection planes is called an auxiliary view (frontal, horizontal, or profile).
Any given object can be seen from an endless number of auxiliary perspectives.
An orthographic view that is projected onto a plane other than the frontal, horizontal, or profile plane is referred to as an auxiliary view. One of the six major viewpoints is not an auxiliary view.
Key Points:
• A new line of sight is placed in relation to the object to produce auxiliary perspectives.
• Any number of auxiliary views can be made, including new auxiliary views made from older auxiliary views.
• An orthographic view that has been projected so that the lines of sight aren't parallel to the main projection planes is called an auxiliary view (Frontal, Horizontal, or Profile).