Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 49
methods just given for the pointand straight line. The only other case which will be takenup at this time is that of a convex solid bounded by planefaces. 28 DESCRIPTIVE GEOMETRY [IV, § 44 44. Shadow of a Convex Solid. A frustum of an irregulartriangular pyramid (Eig. 58) has six corners and nine… … Fig. 58 polygon possible, with three or more of these shadow points asvertices. In Fig. 58, the shadow is the polygon 14245s6,441j>the point 3, being omitted because it falls inside the polygon.The part lse/4s on H in front of GL is an actual shadow; theremaining part, e2,sbJosf, shows the…
Geometry, Descriptive
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