Triangle Calculator
Calculate triangle area from base and height, perimeter from three sides, and solve right triangles using the Pythagorean theorem.
How to Use
Base & Height: Enter the base and height to calculate the area.
Three Sides: Enter all three side lengths to calculate the perimeter.
Right Triangle: Enter the two legs (a and b) to find the hypotenuse using the Pythagorean theorem.
How It Works
Area (base & height): Area = ½ × base × height
Perimeter (three sides): Perimeter = side₁ + side₂ + side₃
Pythagorean theorem: For a right triangle with legs a and b and hypotenuse c: a² + b² = c². Therefore c = √(a² + b²).
Frequently Asked Questions
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