H4Y4P3E1R1C3U1B3E1S1
22 points
HYPERCUBES is validvalid
HYPERCUBE,
HYPERCUBE, a figure in a space of four or more dimensions having all its sides equal and all its angles right angles
HYPERCUBE,
HYPERCUBE, a figure in a space of four or more dimensions having all its sides equal and all its angles right angles