Anthony, Gardner Chace, 1856- (from old catalog), Ashley, George Francis, (from old catalog) joint author · Boston, D. C. Heath & co. · leaf 130
Through assumed points onone directrix draw lines parallel to the givenline in the plane director, thus defining anauxiliary cylinder. 2. Determine the curveof intersection between this cylinder and oneof the projecting cylinders of the seconddirectrix. 8. Through the intersection ofthis curve with… … Fig. 182 Fig. 183. 114 DESCRIPTIVE GEOMETRY In the first type the three Imear directricesmay be curvilinear, rectilinear, or both curvi-linear and rectilinear. In the second type,with two linear directrices and a plane director,the directrices may be curvilinear or rectilinear,and a cone may be…
Geometry, Descriptive
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