All objects that you as a Illustrator Draftsman draw are three dimensional.
The problem facing you is presenting three dimensions (length, width, and
depth) on a two-dimensional plane, which is your drawing surface. In the last
chapter we discussed depicting length, width, and depth pictorially in
perspective projections. In this chapter, three-dimensional objects drawn on
two-dimensional surfaces in a way that exposes and explains each surface of
the object is called parallel projections. Parallel projections are used in
technical drawing and drafting applications.
The material in this chapter enables you to do the following:
Define and identify parallel projections.
Recognize the characteristics of oblique parallel projections.
Identify the primary difference between oblique cavalier and cabinet
Recognize the characteristics of orthographic parallel projections.
Name the three types of axonometric projections.
Identify predominant features in isometric projections.
Recognize the differences between first- and third-angle projections.
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