http://en.wikipedia.org/wiki/Hexahedron
Generally, a hexahedron is any polyhedron with six faces, most commonly a cube. No hexahedron has a hexagon for any of its faces; most have squares or triangles.
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Infinitely many - if you have an infinite supply of the materials from which they are made.
there is 7 hexagons in the design
None.
They have 6
how many vertices does 3 hexagons and 8 rectangles have all together