Where does “beşgen” come from?

beşgen (Turkish) comes from Turkish -gen, from Ancient Greek γωνία, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

beşgen (Turkish): pentagon

Definitions

pentagon

Ancestry of “beşgen”, step by step

Step	Language	Word	Meaning
1	Turkish	-gen	having sides
2	Ancient Greek	γωνία	corner, angle; joiner's square; cornerstone
3	Ancient Greek	γόνυ	knee
4	Proto-Hellenic	gónu	knee
5	Proto-Indo-European	ǵónu	knee

Every word from Proto-Indo-European ǵónu →Every word from Proto-Hellenic gónu →Every word from Ancient Greek γόνυ →