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Chapter ~

                Three-dimensional




                projection exercises






                This chapter introduces examples where three-dimensional components need to be
                presented on the screen with sufficient views to define their shape accurately. At the
                end of the chapter you will be able to project relevant linework between views in order to
                complete them. Examples show component views in line vertically and horizontally and
                introduce the projection of curves, tapers and angular surfaces. Conic sections are given
                to demonstrate constructions for the hyperbola, parabola and ellipse. Intersections are
                shown between parts of solids joined to each other with examples of pyramids, prisms,


                         50        10      40             5  15                    15  5



                                                           D


                                                     o
                                                     LO











                 14             90                        14            90             .. I






                      COMPLETE
                      THIS VIEW














                Figure 6.1
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