Mark (✓) against the correct answer:

Question:

Mark (✓) against the correct answer:

How many diagonals are there in a hexagon?

(a) 6

(b) 8

(c) 9

(d) 10

Solution:

(c) 9

Hexagon has six sides.

Number of diagonals $=\frac{n(n-3)}{2} \quad$ (where $n$ is the number of side $s$ )

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

$=9$

 

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