Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 164
Fig. 221. Fig. 222. 139. Solution of Plane Problems by Revolution of the Plane. By extending the preceding problem, any number of points orlines lying in a plane can be revolved into one of the coordinateplanes, and the revolved position will show the true relationexisting between them. The problem…
Geometry, Descriptive
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