Online Encyclopedia

OCTAHEDRON (Gr. 6K-rw, eight, Mpa, base)

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Originally appearing in Volume V19, Page 992 of the 1911 Encyclopedia Britannica.
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OCTAHEDRON (Gr. 6K-rw, eight, Mpa,
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base)  , a solid bounded by eight triangular faces; it has 6 vertices and 12 edges . The
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regular
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octahedron has for its faces equilateral triangles; it is the reciprocal of the
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cube . Octahedra having triangular faces other than equilateral occur as crystal forms . See
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POLYHEDRON and
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CRYSTALLOGRAPHY .

End of Article: OCTAHEDRON (Gr. 6K-rw, eight, Mpa, base)
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OCRICULUM (mod. Otricoli) 		[next]
OCTAVE (from Lat. octavus, eighth, octo, eight)

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