''Hexa'' means Six, so a polygon which have 6 Angles, 6 Sides and 6 Vertices is known as Hexagon.
Below diagram represent, Two Hexagon PQRSTU and ABCDEF .
In the Above diagram :
Hexagon PQRSTU has
6 Sides  PQ, QR, RS, ST, TU and UP
6 Angles  PQR, QRS, RST, STU, TUP and UPQ
6 Vertices  P, Q, R, S, T and U
In the Above diagram :
Hexagon ABCDEF has
6 Sides  AB, BC, CD, DE, EF and FA
6 Angles  ABC, BCD, CDE, DEF, EFA and FAB
6 Vertices  A, B, C, D, E and F
