has integer edge lengths, face areas, and volume
... that any tetrahedron that has integer edge lengths, face areas, and volume can be given in integer vertex coordinates?
... that any <a href="./Tetrahedron" id="mwAac" rel="mw:WikiLink" title="Tetrahedron">tetrahedron</a> that <b id="mwAag"><a href="./Heronian_tetrahedron" id="mwAak" rel="mw:WikiLink" title="Heronian tetrahedron">has integer edge lengths, face areas, and volume</a></b> can be given in integer vertex coordinates?