Kenison, Ervin, Bradley, Harry Cyrus, 1871-1936 · New York : The Macmillan Company · leaf 232
rough any line tangent to any double curvedsurface of revolution. The solution requires the use as anauxiliary of a surface whose properties have not yet been dis-cussed. Particular solutions can be found, however, for thefollowing cases. (1) The given surface a sphere, the line general, in… … Fiu. .97. 212 DESCRIPTIVE GEOMETRY [XX, §171 Problem 39. To pass a plane tangent to a sphere through agiven line without the surface. Analysis. This analysis is shown pictorially in Fig. 298.Let A be the given line, and o the center of the given sphere.Let Q and T represent the required tangent…
Geometry, Descriptive
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