The number of diagonals in a Hexagon is:

The correct answer is Option (4) → 9

A polygon with $n$ sides has

Number of diagonals = $\frac{n(n-3)}{2}$

For a hexagon, $n=6$:

$\frac{6(6-3)}{2} = \frac{6 \times 3}{2} =\frac{18}{2}= 9$