Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 106
Fig. 89, it will be seen that the line of intersection of the auxiliaryplane Y, with the given plane Z (cd), contains the requiredtrace, i, of ab on Z. VI, § 78] POINTS, LINES, AND PLANES 89 … Fio. 91 In Fig. 91, the operation is carried out in projection. The plane Z and the line ah are given. The auxiliary plane Y is passed through the line ah (§ 66). The hne of intersection of Z and Y, cd, is next determined (§75). This line is seen to intersect the given line ah at i, which is the…
Geometry, Descriptive
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