Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 304
center, e, of the sphere are at the samedistance above H. With 5r as center, radius equal to 5h-Sh or5h—ih, draw the circle CT, which represents the circle cut fromthe sphere by the plane W. In this case both elements inter-sect the circle. This gives four intersections, 6r, 7r, 8r, 9r,from which… … *ju. 330. 284 DESCRIPTIVE GEOMETRY [XXVI, § 198 Problem 51. To find the intersection of a sphere and a cylinder. Analysis. To cut elements from the cylinder, auxiliaryplanes must be taken parallel to its axis (§ 190). Let theseplanes be taken perpendicular to H. Assume a secondaryplane of…
Geometry, Descriptive
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