Learn the Pythagorean theorem, see visual proofs, and practice with an example.

This theorem is used in right triangles (triangles with a 90° angle).

Lessons

1. Pythagorean Formula
2. Pythagoras Theorem (a² + b² = c²) – Visual Proof 1
3. Pythagoras Theorem (a² + b² = c²) – Visual Proof 2
4. Pythagoras Theorem (Example)

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