Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 150
Fig. 202. Fig. 203. Corollary II. To find the second projection of a line lyingin a plane when the general solution fails, partially or wholly. Let Q, Fig. 203, be the given plane, and let ah bh be given sothat it cannot be produced to intersect either HQ or GLwithin the limits of the figure. Then…
Geometry, Descriptive
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