Wow – geometry. That’s a tough one. A square is a 2D object with equal sides. A cube is a 3D object with equal sides. At all higher dimensions, 4D, 5D etc., a hypercube is the object you get if all sides in all allowed dimensions are equal.
I suspect some mathematicians might be able to see such an object in their mind’s eye (or imagination) but I confess I can’t.
I’m not even sure I want to try, in case my head explodes and makes a mess of the carpet.