Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 86
Fig. 67 profile trace is little used, however. Hereafter, unless otherwisespecially noted, the phrase traces of a plane will be taken tomean the traces on the H and V planes. VI, § 59] POINTS, LINES, AND PLANES 69 … Fig. 68 57. Assuming a Plane. It will be e^ident at once that anytwo lines intersecting on HA represent the traces of someplane; hence to assume a plane it is sufficient to draw any twolines intersecting on HA. It may be well to note, however, as a precautionary measureto guide ones sense of…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
