Pythagorean Theorem — FAQ
Frequently asked questions about Pythagorean Theorem (a²+b²=c²).
Q1. What is the Pythagorean Theorem?
It states that in any right triangle, the square of the hypotenuse (longest side) equals the sum of the squares of the other two sides: a² + b² = c².
Q2. Does it only work for right triangles?
Yes — the theorem applies exclusively to triangles with one 90° angle. For other triangles, use the law of cosines instead.
Q3. What are real-world uses of the Pythagorean Theorem?
GPS distance calculations, construction (checking square corners), computer graphics (2D distance), and 3D game engine collision detection all use it.
Have more questions? Try the interactive calculator at /tools/pythagorean-theorem-visualizer