Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 24
sition, and may be straight or curved.Hence it is evident that in the representation of objectsbounded by plane surfaces, when any of these planes comes into a position per-pendicular to X, theoutline of the surfacecannot be determinedfrom the plan and ele-vation. Therefore itis frequently… … Fig. 12. 14 DESCRIPTIVE GEOMETRY and the lines perpendicular to X the ends of the cylinder.But these two views would represent as well a prism ofsquare section, Fig. 12, so that to determine the form fullyan end view is necessary. The new plane of projection isusually taken perpendicular to both H…
Geometry, Descriptive
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