Calculate area, perimeter, and diagonal for all shapes including triangles, squares, rectangles, circles, ellipses, and trapezoids quickly and accurately.
Comprehensive calculator for all geometric shapes including right triangles, equilateral triangles, isosceles triangles, general triangles, squares, rectangles, circles, ellipses, and trapezoids. Just input the required values and get all properties automatically calculated.
Right triangles use the Pythagorean theorem (a² + b² = c²) to calculate the hypotenuse. Equilateral triangles only need one side to calculate height and area. Isosceles and general triangles use Heron's formula for accurate area calculation.
Squares calculate area, perimeter, and diagonal from one side length. Rectangles use width and length to find area, perimeter, and diagonal. The Pythagorean theorem is also used for diagonal calculations.
Circles calculate diameter, circumference (2πr), and area (πr²) from radius. Ellipses calculate area (πab) and approximate circumference from major and minor axes. Uses π = 3.14159265359.
Trapezoids calculate area from top base, bottom base, and height. Formula: Area = (top + bottom) × height ÷ 2. Can also be used for parallelograms and other quadrilaterals.
Results allow intuitive size comparison. Helpful for geometry education and quick calculations in practical work.