Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 86
the line ofintersection of the two shadow planes. In Fig. 138 are shown the shadows of a rectangular block.The method of locating the points is shown by the construc-tion lines. The hidden porfon of the shadow on V. S. P.may be shown by dotted lines as indicated, or may beomitted entirely. The… … Fig. 138. 76 DESCRIPTIVE GEOMETRY determined by finding the shadow of its vertex and drawingtangent lines from this point to the base. The points oftangency determine the elements which are the lines ofshade. For finding the lines of shade on a solid of revolutionwith its axis vertical, and its…
Geometry, Descriptive
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