Déclinaison / Conjugueur latin
| SINGULIER |
| Nom. | quadriangulum |
| Gen. | quadrianguli |
| Dat. | quadriangulo |
| Acc. | quadriangulum |
| Abl. | quadriangulo |
| Voc. | quadriangulum |
| PLURIEL |
| Nom. | quadriangula |
| Gen. | quadriangulōrum |
| Dat. | quadriangulis |
| Acc. | quadriangula |
| Abl. | quadriangulis | |