2D Shape Master Calculator
Complete 2D geometry calculator for all common shapes — rectangles, squares, circles, triangles, ellipses, parallelograms, rhombuses, trapezoids, and regular polygons. Calculate area, perimeter, angles, and more.
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How to Use This Calculator
- Select the 2D shape type from the dropdown — options include rectangle, circle, triangle, ellipse, parallelogram, trapezoid, and regular polygon.
- Enter the required dimensions for the chosen shape; only the relevant input fields will be active.
- Area and perimeter (or circumference) are computed using standard geometric formulas for each shape.
- Additional properties — such as diagonals, angles, inradius, or circumradius — are shown where applicable.
- The pie chart breaks down shape properties proportionally for quick visual reference.
- All dimensions must be positive; for triangles the three sides must satisfy the triangle inequality.
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