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how many faces does the trapezohedron have
It can be.
Octagon
Octahedra. But there are 257 different kinds. Some of the more common ones are:
heptagonal pyramid.
hexagonal dipyramid.
hexagonal prism.
truncated tetrahedron.
tetragonal trapezohedron.
You can search for these on Wikipedia to see an image.
Is it a 3d kite????(this is the asker)
pentahedron examples: tetrahedron with one truncated corner, square pyramid