Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 69
is ahove II, and on thenear side if the point is below. Thus, in Fig. 87, Vx is viewedin the direction of the arrow, and the projection axbxv can In-laid off only on the side of GXLX as shown. < inversely, if thesecondary projection axvbxv is constructed as in Fig. 88, it followsthat Vx is… … Fig. 89. Fig. 89, note that the directions of the points a and & fromH, as shown by the relations of a and bv to OL, must be pre-served in the secondaryprojection. In Fig. 90 aprofile line is shown pro-jected on a profile planeby this method. (See§§ 64, 66.) 70. Simplification ofProblems by…
Geometry, Descriptive
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
