Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 65
nt is used (§ 11). Figures 44 and 45 show the open-ing of P to the left into V.Figure 46 shows the projec-tions of thepoints as areshown in43, when P *is openedin themanner shownin Figs. 44 and 45. It will be mucheasier to followthis operation in pro-jection if the signifi-cance of the… … Fig. 43
Geometry, Descriptive
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