Multiple choice general knowledge math & puzzles

Number of diagonals for an 11-sided polygon

  1. 25

  2. 36

  3. 44

  4. 48

  5. 50

  6. 55

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The number of diagonals in an $n$-sided polygon is given by the formula $n(n - 3) / 2$. For an 11-sided polygon, this is $11 \times (11 - 3) / 2 = 11 \times 8 / 2 = 44$. Other options like 36, 48, or 55 represent calculation errors or incorrect formulas.