Where does “pentagonum” come from?
pentagonum (Latin) comes from Ancient Greek πεντάγωνον, from Ancient Greek πεντάγωνος, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.
Ancestry of “pentagonum”, step by step
| Step | Language | Word | Meaning |
|---|
| 1 | Ancient Greek | πεντάγωνον | pentagon |
| 2 | Ancient Greek | πεντάγωνος | five-angled |
| 3 | Ancient Greek | γωνία | corner, angle; joiner's square; cornerstone |
| 4 | Ancient Greek | γόνυ | knee |
| 5 | Proto-Hellenic | gónu | knee |
| 6 | Proto-Indo-European | ǵónu | knee |