Chapter 9. Geometrical constructions and tangency
Students will often experience difficulty in handling problems involving two- and three-dimensional geometrical constructions. The examples in Chapters 9–13 are included in order to provide a background in solving engineering problems connected with lines, planes, and space. The separate chapters are grouped around applications having similar principles.
Copying a selection of these examples on the drawing board or on CAD equipment will certainly enable the reader to gain confidence. It will assist them to visualize and position the lines in space which form each part of a view, or the boundary, of a three-dimensional object. It is a necessary part of draughtsmanship to be able to justify every ...
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