Where does “шестнадцатиугольник” come from?

шестнадцатиугольник (Russian) comes from Russian шестна́дцать, from Russian шесть, from Old East Slavic шесть, from Proto-Slavic šestь, from Proto-Balto-Slavic šéš, from Proto-Indo-European swéḱs — six.

шестнадцатиугольник (Russian): hexadecagon

Definitions

  1. hexadecagon

Ancestry of “шестнадцатиугольник”, step by step

шестнадцатиугольник traces back through two separate lines of ancestry.

via Russian шестна́дцать

StepLanguageWordMeaning
1Russianшестна́дцатьsixteen (16)
2Russianшестьsix
3Old East Slavicшестьsix
4Proto-Slavicšestьsix
5Proto-Balto-Slavicšéšsix
6Proto-Indo-Europeanswéḱssix

via Russian у́гол

StepLanguageWordMeaning
1Russianу́голangle; corner
2Proto-Slavicǫgъlъcorner, angle
3Proto-Balto-Slavic*ángulas—
4Proto-Indo-Europeanh₂engulosjoint?
5Proto-Indo-Europeanh₂eng-curve, bend
Every word from Proto-Indo-European swéḱs →Every word from Proto-Balto-Slavic šéš →Every word from Proto-Slavic šestь →