Where does “कोन” come from?

कोन (Hindi) comes from Sanskrit कोण, from Ancient Greek Κρόνος — Saturn; Cronus.

Ancestry of “कोन”, step by step

Step	Language	Word	Meaning
1	Sanskrit	कोण	a corner, angle; an intermediate point of the...
2	Ancient Greek	Κρόνος	Saturn; Cronus