Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 177
e the given lines.Through A pass the plane Q, parallel to B (Prob. 7, § 107).To do this, assume any point, c, in A. Through c draw line Dparallel to B. Pass the plane Q through the lines A and D.Next assume any point e in B. From e draw the line F per-pendicular to Q (§ 111). Find the point k, in… … Fig. 237. Let now the trial perpendicular ek be carried parallel to itselfto the position on. In this translation, point e moves along theline B, and point k moves in the line L, parallel to B, to thepoint n, where L intersects A. Consider each projection sepa-rately. In the //-projection, through…
Geometry, Descriptive
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