Smith, David Eugene, 1860-1944 · Boston, New York [etc.] Ginn and Company · leaf 323
ron, its vertices being at the centers of the faces ofthe octahedron. If we think of the cube as expanding,the faces of the octahedron will cut off the corners of thecube as seen in the first figure, leaving the cube as shownin the second figure. If the corners are cut off still more,we have the…
Geometry
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