Where does “pentàgon” come from?

pentàgon (Catalan) comes from Catalan penta-, from Ancient Greek πεντα-, from Ancient Greek πέντε, from Proto-Hellenic pénkʷe, from Proto-Indo-European pénkʷe — five.

pentàgon (Catalan): pentagon

Definitions

pentagon

Ancestry of “pentàgon”, step by step

Step	Language	Word	Meaning
1	Catalan	penta-	penta
2	Ancient Greek	πεντα-	penta-, five; five
3	Ancient Greek	πέντε	five
4	Proto-Hellenic	pénkʷe	five
5	Proto-Indo-European	pénkʷe	five

Words derived from “pentàgon”

pentagonal

Every word from Proto-Indo-European pénkʷe →Every word from Ancient Greek πεντα- →Every word from Proto-Hellenic pénkʷe →