Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 39
22 DESCRIPTIVE GEOMETRY [HI, § 17 Figure 19 shows a line which is inclined to both planes ofprojection. It will be evident immediately that the projectionsare each shorter than the line itself, and that the angles a and/S* between the projections and HA are greater than the angles … a6=a line in space(i*6*=horizontal projection(j»6«=vertical projectiona!6i=profile projection Fig. 19 ahba, ahha, and dbb^aiare the horizontal, verti-cal, and profile, projectingplanes a and /S, which the line makes with the planes of projection.18. Normal and Special Cases. The previous article…
Geometry, Descriptive
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