Pythagoras' theorem describes the relationship between the three sides of a right-angled triangle. It is incredibly useful for engineering and construction and was used by humans centuries before ...

For National 5 Lifeskills Maths revise how Pythagoras' Theorem can determine the side of a right-angled triangle and be used to find a missing dimension.

Learn about and revise how Pythagoras’ theorem can be used to calculate the sides of right-angled triangles with GCSE Bitesize OCR Maths.

Two New Orleans high school students have proven the Pythagorean Theorem using trigonometry without relying on circular reasoning. That should be impossible.