Аннотация
This note discusses the derivation of a polynomial for the volume
of a octahedron, when the edge lengths of it are given. It is known
that the volume of a flexible polyhedron with those edge lengths
doesn't depend on the realization. For octahedra there are 8 realizations,
and therefore the polynomial that describes the volume must have
degree 8. The derivation of this polynomial is done by using a computer
algebra system.
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