Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 98
the problem is simplified by choosing VI, § 74] POINTS, LINES, AND PLANES 81 as the auxiliary a line parallel to H and to the given plane.Refer to §§ 63, 61 and the last paragraph of § 71. In Fig. 81, let the plane Z and the point a be given, and let itbe required to pass a plane through a,… … FiQ. 81 a, as shown by nm. The V trace of nm («.) will lie in theV trace of the required plane. Hence a line drawn throughw, parallel to ZZ, will be one of the required traces, Y F.Through Y draw YY parallel to ZZ*. EXERCISE SHEET XXV 1. Given the plane M (75, Af 60° r, ilf 46° r) and the point…
Geometry, Descriptive
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