Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 84
any line, not a straight line,on a given plane. Let abed, etc., be any line, not a straight line, whoseshadow falls on a given plane. (Figs. 29, 30, and 31.) The line abed, etc., is made up of an infinite numberof points. By casting the shadows of a sufficient numberof these points, the shadow of… … Fig. 27
Shades and shadows · Geometry, Descriptive
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