Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 119
e the apex of the cone must be in all the section planes that are of sersicein finding the intersection, and these section planes must contain generators of no DESCRIPTIVE GEOMETRY the cylinder also, therefore they must contain a line, through the apex point,parallel to the generators of the… … Fig. 107. cone, as the plane VRH does, and obtain plans and elevations of generators of both surfaces, as they cross each other, thus finding projections of section points. Other simple cases of interpenetration, not requiring for their solution any new principle, or serious change of method, will…
Geometry, Descriptive
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