Question:medium

The number of diagonal in a polygon of $n$ sides is:

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A triangle ($n=3$) has 0 diagonals, which matches the formula: $3(0)/2 = 0$.

Updated On: Apr 8, 2026

$\frac{n(n-3)}{2}$
${}^{n}C_{2}$
$n(n-3)$
$\frac{n(n-1)}{2}$

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The Correct Option is A

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The Correct Option is A

Solution and Explanation

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