In geometry, a hexagon (from Greek ἕξ hex, "six" and γωνία, gonía, "corner, angle") is a six-sided polygon or 6-gon. The total of the internal angles of any simple (non-self-intersecting) hexagon is 720°.
Think Hexagon as Six-sided polygon
The only basic polygon with an X in the third letter. Six and Hex also sound similar.