Descriptive geometry for students in engineering science and architecture; a carefully graded course of instruction (1915)
Armstrong, Henry F. (Henry Fry), 1868- · New York, J. Wiley & sons, inc.; [etc., etc.] · leaf 102
yramid, i edge of base, height 3, when the baseis incHned to the H.P. at 40°, and one triangular face is at 65° to the H.P. CHAPTER XIII TANGENT PLANES TO A SPHERE, AND THE FINDING OF AN OBLIQUE PLANEWITH GIVEN INCLINATIONS Section 26. In discussing tangent planes to spheres it must chiefly be… … yiC: 93- ru-.. 94. In the illustration. Fig. 93, a plane is shown tangent to a given sphere thecentre of which is aa. The radius, which is perpendicular to the plane, is alsoshown in elevation and plan, ap and up. A great circle of the sphere, that is,one whose plane passes through the centre of…
Geometry, Descriptive
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