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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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Logical problems present several conditions about people, objects, events or choices and require their possible arrangements to be tested. They cover constraint-based reasoning, rankings, matching, grouping, scheduling and elimination, with attention to the difference between a complete solution and a possibility that merely satisfies one condition.

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