How many diagonals does a hexagon have?
(a) 9
(b) 8
(c) 2
(d) 6
We know that,
The number of diagonals in a polygon of n sides is n(n – 3)/2
Where n = 6
Then,
= 6 × (6 – 3)/2
= 6 × 3/2
= 18/2
= 9
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