Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 109
int is known. The traces of the required planes in the preceding problems,being straight lines, have necessarily been located by one ofthese methods. It occasionally happens, however, that neces-sary points for locating these traces fall far outside any rea-sonable limits for the size of the… … Fig. 150. point, s2, on HQ, and one point, t2, on VQ, can be found.Assume any point, e, in the given line A; through this pointdraw the line D, parallel to the given line B. Pass the planeQ through the parallel lines B and D. This plane mustnecessarily contain the line A, since A intersects both B…
Geometry, Descriptive
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