Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 117
FiQ. 101 … Fig. 102 and that of the vertical trace ZZ^. The point a itself lies in theaxis of rotation and therefore will not move during the rotation.It will be noticed also that the rabatted position of b lies on a line VI, § 93] POINTS, LINES, AND PLANES 101 {bV), passed through ft* perpendicular to ZZ,…
Geometry, Descriptive
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