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[Audio] Sometimes it is desirable the true shape and dimensions of an irregular surface which inclined to one or more of principal planes of projection. In this case a view must be projected on to a plane which is parallel to the surface in question. This plane is called an auxiliary plane and the view projected on to this plane is called an auxiliary view..
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[Audio] With " Multiview or Three View Projections," we learned to describe an object with views on the three regular planes of projection. These are the top, or horizontal plane; the front, or vertical plane; and the side, or profile plane. With these planes, you can solve many graphic problems..