Ames, William L. (William Lewis), 1855-, Wischmeyer, Carl · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 62
FiG. 91; … Fig. 92. mon to all three planes, and hence a point of the requiredline of intersection. Case e.—When neither pair of traces meets within thehmits of the drawing (Fig. 93). In this case two auxiliaryplanes are taken, giving two points in the required line ofintersection. 52 DESCRIPTIVE GEOMETRY…
Geometry, Descriptive
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