Davies, Charles, 1798-1876 · New York and Chicago, A. S. Barnes and company · leaf 130
d the axis BOOK VI. J2U Pyramid and Cylinder. 14. The slant height of a rightpyramid, is a line drawn from the ver-tex, perpendicular to one of the sidesof the polygon which forms its base.Thus. SF is the slant height of thepyramid S—ABODE. 15. If from the pyramid S—ABCDEthe pyramid S—abede be cut… … 16. A Cylinder is a solid, described bythe revolution of a rectangle, AEFD,about a fixed side, EF. As the rectangle AEFD, turns aroundthe side EF, like a door upon its hinges,the lines AE and FD describe circles,and the line AD describes the convex sur-face of the cylinder. The circle described by…
Geometry · Plane trigonometry
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