MASCULINE FEMININE NEUTER SINGULAR NOM. triangulus triangula triangulum GEN. trianguli triangulae trianguli DAT. triangulo triangulae triangulo ACC. triangulum triangulam triangulum ABL. triangulo triangula triangulo PLURAL NOM. trianguli triangulae triangula GEN. triangulorum triangularum triangulorum DAT. triangulis triangulis triangulis ACC. triangulos triangulas triangula ABL. triangulis triangulis triangulis