Cubes and hypercubes
In this image we see the net of vertices and edges and one of the cubic faces of a hypercube. It is really a cube, even if it doesn't seem so; in the same way, when we draw a cube in a sheet of paper, some square face doesn't look like a square.
See another image.
immagine di Francesca Lazzaroni
The image belongs to the sections...:
Dossier 4d (From "XlaTangente")
Projections of a hypercube (4D geometry)