Question

How many diagonals does a hexagon have?

• A. 9
• B. 12
• C. 15
• D. 18

Answer 1

Answer:

A. 9

The number of diagonals in an (n)-sided polygon is:

$\frac{n(n-3)}{2}$

For a hexagon ((n = 6)):

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

$= 9$

Answer: 9 diagonals.