| Rechteckmatrix | Nominativ, Singular | nominative case, singular | |
| Rechteckmatrixe | Genitiv, Singular | genitive case, singular | |
| Rechteckmatrixen | Dativ, Singular | dative case, singular | |
| Rechteckmatrix(e)s | Akkusativ, Singular | accusative case, singular | |
| Rechteckmatrixer | Nominativ, Plural | nominative case, plural | |
| Rechteckmatrixern | Genitiv, Plural | genitive case, plural | |
| Rechteckmatrixn | Dativ, Plural | dative case, plural |