The (n+1)-demihypercube has the same projected Petrie polygon as an n-hypercube. The vertices can be projected into the same location. The n-cube has square faces, while the n-demicube has triangle faces and more edges.
| n | n-cube | (n+1)-demicube |
|---|---|---|
| 2 |  Square |
 Tetrahedron |
| 3 |  Cube |
 16-cell |
| 4 |  Tesseract |
 Demipenteract |
| 5 |  Penteract |
 Demihexeract |
| 6 |  Hexeract |
 Demihepteract |
| 7 |  Hepteract |
 Demiocteract |
| 8 |  Enneract |
 Demienneract |
| 9 |  Enneract |
 Demidekeract |
| 10 |  Dekeract |