Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 325
Fig. 270 308 DESCRIPTIVE GEOMETRY EXERCISE SHEET CXI (§216) Determine the shade hne and shadow, also the shadow on H, forthe double-curved surface in Fig. 271. Use a point source of light onthe left border line, 11| above H and 9i in front of V. … Fig. 271 EXERCISE SHEET CXII (§216) With the sun as the source of hght, determine the shade line andshadows, also the shadows on H and V, for the double-curved surfacein Fig. 272.
Geometry, Descriptive
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