Area of Polygon Calculator
Calculate the area of regular polygons (3-12 sides) from side length. Shows perimeter, interior angle, and apothem with step-by-step formula.
How to Use Area of Polygon Calculator
The Area of Polygon Calculator computes the area of any regular polygon (3 to 12 sides) given the side length. Select the number of sides ā from triangle (3) to dodecagon (12) ā enter the side length, and get instant results including area, perimeter, interior angle, and apothem. The formula A = (n Ć sĀ² Ć cot(Ļ/n)) / 4 is displayed with your values substituted for educational reference. Useful for geometry homework, architectural planning, tile calculations, and any application involving regular polygons. All calculations run locally in your browser with no data transmitted.
Step-by-Step Instructions
- Select the number of sides (3 to 12)
- Enter the side length of the polygon
- Click Calculate Area to compute results
- View area, perimeter, interior angle, apothem, and formula
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