Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 99
he plane Y parallel to X. (Use a normal-caseauxiliary Une.) 2. Given the plane Z (45, Z* 30° r, Z 60° i) and the point 6 (III,38, 8, 7). Through 6 pass the plane W parallel to Z. (Use a special-case line.) 3. Given the plane U (3, V 30° /, U 45° I) and the point c (IV,16, 5, 7). Through c pass the… … FiQ. 82 intersection is a point common to the two planes; hence it willbe in the line of intersection of the planes. Two such pointsare necessary to fully determine the line of intersection of anytwo planes. VI, § 76] POINTS, LINES, AND PLANES 83 In Fig. 82 are shown two planes, X and Y. All points…
Geometry, Descriptive
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