Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 111
considerations furnish thebasis for the following solution. Referring to Fig. 96, the common perpendicular between ah and cdbeing required : (1) Pass the plane Z through ah and parallel tocd (§ 72). The line ef, parallel to cd and intersecting ah at anypoint, as g, was used as an auxiliary line.… … Fig. 96 VI, § 87] POINTS, LINES, AND PLANES 95 the projection of cd on Z is obtained. This Hne contains thefoot of every perpendicular dropped from cd on Z. (4) Thepoint where jk crosses ab, namely, vi, will be the foot of thecommon perpendicular between cd and ab. (5) Draw mnparallel to cj, and…
Geometry, Descriptive
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
