Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 439
be a sphere in a given cube. Ex. 1503. The volume of any tetrahedron is equal to the product ofits surface and one third the radius of the inscribed sphere.Hint. See §§ 491 and 492. Ex. 1504. Find a point within a triangular pyramid such that theplanes determined by the lines joining this point to… … Given tetrahedron V-ABC. To circumscribe a sphere about tetrahedron V-ABC, I. Construction 1. Through D, the mid-point of AB, construct plane D0± AB;through E, the mid-point of BC, construct plane EOl.BC\ andthrough F^ the mid-point of VB^ construct plane FO ± VB. 2. Join 0, the point of…
Geometry, Plane · Geometry, Solid
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