Higbee, F. G · New York, John Wiley & Sons · leaf 131
onstruction. When the axis of the cone is oblique to H andV, the base being any plane curve. In Fig. 96, S is the given plane cutting the cone whose apexis Q. Pass auxihary planes R, \J, V, etc., through 0 perpendicu- I20 ESSENTIALS OF DESCRIPTIVE GEOMETRY lar to H. The auxiliary plane R cuts from… … Fig. 96. in problems of this character it generally happens that theaiixiUary planes run off the paper, as, for example, V, making itimpossible to find points common to the V traces, as m and n.To avoid the difficulty which arises the following method offinding the intersections of S with the…
Geometry, Descriptive
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