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Octahedron 4-Compound


Octahedron4Compounds

Attractive compounds of four octahedra can be constructed as the duals of the cube 4-compounds.

These compounds are implemented in the Wolfram Language as PolyhedronData[{"OctahedronFourCompound", n}] for n=1, 2, ..., 5.

Octahedron4CompoundsAndDuals

These octahedron 4-compounds are illustrated above together with their cube 4-compound duals and common midspheres.

Octahedron4CompoundsIntersectionsAndConvexHulls

The common solids and convex hulls of these compounds are illustrated above. The first compound has interior of a square-augmented cuboctahedron and convex hull with the connectivity of the truncated cube. The second compound has convex hull corresponding to a square-augmented cuboctahedron. The fourth compound has convex hull that is a (non-equilateral) 12-prism. The interior and convex hull of the fifth are (different) 16-dipyramids.

Octahedron4-CompoundNet

The figure above gives nets for constructing the first octahedron 4-compound. For a unit octahedron, the net edge lengths are

s_1=1/(35)sqrt(19)
(1)
s_2=1/(15)sqrt(7)
(2)
s_3=1/5
(3)
s_4=1/(15)sqrt(13)
(4)
s_5=1/3.
(5)

The surface area of the hull of the first compound is

 S=(494)/(175)sqrt(3) approx 4.89.
(6)

See also

Cube 4-Compound, Polyhedron Compound, Regular Octahedron

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Cite this as:

Weisstein, Eric W. "Octahedron 4-Compound." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Octahedron4-Compound.html

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