Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 142
e ae of the prism is the front edge, and intersects the sphere at the points10 and 11 on the front half. Hence ae is visible from av to 10,and from 11 to e. Since the edge cd is tangent to the sphereat point 5 on the back half, cd disappears on V where it crossesthe outline of the sphere. Hence the… … d c Fig. 190. 122 DESCRIPTIVE GEOMETRY [XIII, § 131 131. The Intersection of a Sphere with a Right Cylinder. Example 1 (Fig. 191). Given a sphere and a circular cylin-der. The plan of the intersection is evidently the arc of thecircle 1*5*7*, and a study of this plan view will show that…
Geometry, Descriptive
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