Regular Polygon Area Calculator
The area and perimeter of a regular polygon from sides and side length.
Result
Area
64.95
Perimeter
30.00
How it works
Area = (n × s²) ÷ (4 × tan(π/n))
A regular polygon has equal sides and angles. Its area grows with the number of sides, approaching a circle as the sides increase.
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Frequently asked questions
What counts as regular?
All sides and all interior angles are equal — like a square, pentagon or hexagon.
What is the minimum number of sides?
Three — a triangle. This tool works for any polygon with three or more sides.
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