How many diagonals does a hexagon have?
Correct answer: B. 9
- A. 6
- B. 9
- C. 12
- D. 15
Explanation
The formula for calculating the number of diagonals in a polygon is given by n(n-3)/2, where n is the number of sides. For a hexagon, n is 6. Plugging into the formula: 6(6-3)/2 = 9. Therefore, a hexagon has 9 diagonals. Option A (6) is incorrect as it represents the number of sides, not diagonals. Option C (12) includes the sides in the count along with the diagonals. Option D (15) is incorrect as it exceeds the possible number of diagonals in a hexagon.
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