Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 93
tested by means of their profile projections.Thus, the profile lines ad and cd, Fig. IIS, are parallel, sincetheir profile projections are parallel. 71 72 DESCRIPTIVE GEOMETRY [X, § 94 94. Intersecting Lines in Space. If two lines in space intersect,their corresponding projections intersect in the… … Fig. 119. must lie on Ah (§ 36). Moreover, since c is in the line B, c*must lie on Bh. Hence c* is at the intersection of Ah and B\ Similarly, the F-projection of c, c, must lie at the inter-section of Av and B. But since ch and c are two projectionsof the same point, they must lie in the same…
Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
