How many diagonals does a regular Hexagon has ?

The number of sides in hexagon are 6. 

Formulae for calculating number of diagonals is:

= \(\frac{n(n-3) }{2}\) 

= \(\frac{6(6-3) }{2}\) 

= \(\frac{6(3) }{2}\) 

= \(\frac{18 }{2}\) 

= 9

Thus, a regular hexagon has 9 diagonals