Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 111
the object casting the shadowon the object receiving the shadow. Hence it is a pointin the shadow-line. A sufficient number of points of shadow may be deter-mined in this way; and if they are connected by a line,straight or curved as required, they determine the requiredline of shadow. Let a Niche… … Fig. 54 HS ! HX yCr^V^^r IM ^Y
Shades and shadows · Geometry, Descriptive
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