Where does “triangiel” come from?

triangiel (Polish) comes from Italian triangolo, from Latin triangulum, from Latin triangulus, from Latin Angulus, from Proto-Indo-European h₂engulos, from Proto-Indo-European h₂eng- — curve, bend.

Ancestry of “triangiel”, step by step

StepLanguageWordMeaning
1Italiantriangolotriangle; love triangle; ménage à trois;...
2Latintriangulumtriangle; nominative neuter singular of...
3Latintriangulustriangular, three-cornered, three-sided;...
4LatinAngulusA city of the Vestini, situated on a hill near the Adriatic Sea, now the town of Città Sant'Angelo
5Proto-Indo-Europeanh₂engulosjoint?
6Proto-Indo-Europeanh₂eng-curve, bend
Every word from Proto-Indo-European h₂eng-