Beman, Wooster Woodruff, 1850-1922, Smith, David Eugene, 1860-1944 · Boston, Ginn & company · leaf 339
l surface may be con-structed with any directrix and any vertex. 436. Relation of Cone and Pyramid. If points A, B, C, are taken on the perimeter of the base of a cone, and joined tothe vertex V, and if planes be passed through VA and VB, VB and VC, , a pyramid will be formed, called an inscribed… … Pyramids inscribed in cones. The first figure is a right circular cone. Theinscribed pyramids are indicated by dotted lines. It, the altitude. 437. If the base of the cone is a circle, and a regularpolygon is circumscribed about it, the planes determined bythe sides of the polygon and the vertex of…
Geometry
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