Young, George, jr, Baxter, Hubert Eugene, joint author · New York, Macmillan · leaf 57
A H … Fio. 33 o Fia. 335 the H and V projections of the point of intersection must lieon the same perpendicular to HA. Figure 33 a shows the projections of two lines ab and cd, whichintersect at e. In Fig. 33 6 the lines fg and kj, as seen on V,appear to intersect at m. If, however, a perpendicular…
Geometry, Descriptive
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