Higbee, F. G · New York, John Wiley & Sons · leaf 35
Fig. 26. 24 ESSENTIALS OF DESCRIPTIVE GEOMETRY e. When a line is parallel to H or V its view on H or V will beequal in length to the line and its other view will be parallel tothe G. L. … A convenient method of showing the relation of the H, V, and P planes for thethird quadrant, and of the projections of any given line on the planes.
Geometry, Descriptive
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