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| Stella Octangula |
Known as the Stella Octangula, this is a compound of two
tetrahedra. It may be seen as a compound of a
tetrahedron and its dual, another tetrahedron.
It may be constructed using
Great Stella
in various ways. As a stellation of the
octahedron. As a faceting of the
cube. Or by adding the tetrahedron to its dual via the
menu item "Poly→Add Base Model and Dual".
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Here are a couple of the nets required. I glued the white triangles
into the base of each peak for additional strength.
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A couple of completed peaks, with those white triangles glued inside.
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Finally just attach eight peaks together as you would faces of an
octahedron. Half way there.
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Here is a Leonardo-style model of the same thing.
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