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**Vertex description:**3.4.3/2.4**Faces:**7**Edges:**12**Vertices:**6**External facelets:**16**Dual:**Tetrahemihexacron (infinite)**Name breakdown:****Tetra-**: 4 faces (triangles) lie parallel to those of a tetrahedron**-hemi-hexa-**: Hemi = through the centre of model. Hexa = faces parallel to a cube, but only half as many (3) because they're hemi.

Other than some prisms, this is the only uniform polyhedron with an odd number of faces. It has seven: 4 triangles (yellow) and 3 squares (red). The squares intersect each other, bisecting each other along their diagonals. Every part of each square is visible, from one side or the other. It is a faceted octahedron (that is it shares the same vertex positions).

Here's a compound of 5 tetrahemihexahedra. |

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