Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 264
es in the thirdquadrant, and is intersected by the plane Q in the curve 11-12-13 • • • 18-11. The construction involves nothing that hasnot been already explained. The line T, tangent at the point 12 of the curve of intersec-tion, is the line of intersection of the given plane Q with theplane S,… … Fig. 308. 244 DESCRIPTIVE GEOMETRY [XXII, § 180 pendicular to the elements, but otherwise arbitrarily chosen.The true size of the right section, obtained by revolving aboutVR into V, appears at 21r-22r • • • 28r-21r, and its rectification ordevelopment at 21-22 . • • 28-21. The true lengths of…
Geometry, Descriptive
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