Lange, David C. (David Christoph) · New York : John Wiley & Sons ; London : Chapman & Hall · leaf 44
c, d, etc. 40. To find the intersection of a Cone with an obliqueplane. Let a Cone be cut by an oblique plane P. (Fig. 56.)Auxiliary Planes are passed through the vertex of the Coneand perpendicular to a coordinate, as R, S, T, etc. These.Auxiliary Planes cut elements from the Cone which inter-sect… … 34 PRINCIPLES OF DESCRIPTIVE GEOMETRY points needed to determine the intersection are determinedin the same way. 41. To determine the intersection of a double-curvedsurface of revolution with a plane. Let the double-curved surface of revolution be cut bythe plane P. (Fig. 57.) Auxiliary Planes,…
Shades and shadows · Geometry, Descriptive
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