Where does “20-gon” come from?

20-gon (English) comes from English gon, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

20-gon (English): A polygon with twenty sides and twenty angles

Definitions

  1. A polygon with twenty sides and twenty angles

Ancestry of “20-gon”, step by step

20-gon traces back through 3 separate lines of ancestry.

via English gon

StepLanguageWordMeaning
1EnglishgonOne hundredth of a right angle; a gradian;...
2Ancient Greekγωνίαcorner, angle; joiner's square; cornerstone
3Ancient Greekγόνυknee
4Proto-Hellenicgónuknee
5Proto-Indo-Europeanǵónuknee

via English 20]]

StepLanguageWordMeaning
1English20]]

via English [[twenty

StepLanguageWordMeaning
1English[[twenty
Every word from Proto-Indo-European ǵónu