Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 271
meridian, and therefore projecl Oil V as thecontour of the surface. The intersection of A/ with this con-tour at 9/ and 10/ determines the revolved positions of twopoints in the curve of intersection. The actual projections,9, 10, 9A, and 10A, result from counter-revolving the line A. 250… … Fig. 312. GiLi, perpendicular to HQ in any convenient location; thenproceed as in § 70. The secondary projection of the giventorus is identical in form with the original P-projection. Considering now the //-projection and the secondary V-projection as the given projections of the torus, and V\Q as…
Geometry, Descriptive
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