Number of Diagonals Calculator
Find how many diagonals a polygon has. Free online calculator with instant results — no login needed.
Diagonals
What is the Number of Diagonals Calculator?
Find how many diagonals a polygon has. Free online calculator with instant results — no login needed.
Enter your values above and the result updates instantly. Lines joining non-adjacent corners.
Formula
Diagonals = n(n − 3) ÷ 2
Example
Diagonals
FAQs
Hexagon?
6 sides → 9 diagonals.
Related
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