RIGHT SIDE view of lin» 5-6
g. Planes. As the line projection theory was derived from the point projection theory, so the plane projection theory follows directly from the line projection theory. If we consider the following axiom:
To a draftsman, a plane is the area enclosed within a series of lines interconnected end to end.
This differs from the geometric concept of planes in that it considers a plane a finite area, that is, an area with known boundaries. Figure 12 gives the front and top views of plane 1-2-3-4 and asks for the right side view.
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