CHAPTER 6PARALLEL PROJECTIONSOverviewIntroductionAll objects that you as a Illustrator Draftsman draw are three dimensional.The problem facing you is presenting three dimensions (length, width, anddepth) on a two-dimensional plane, which is your drawing surface. In the lastchapter we discussed depicting length, width, and depth pictorially inperspective projections. In this chapter, three-dimensional objects drawn ontwo-dimensional surfaces in a way that exposes and explains each surface ofthe object is called parallel projections. Parallel projections are used intechnical drawing and drafting applications.ObjectivesThe 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 cabinetprojections.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.Continued on next page6-1
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