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

We give a short proof by contradiction of the triangle inequality for the Jaccard distance. The direct proof is not hard, but surprisingly tedious. This could serve as an example in an introduction to ...

Pythagoras’ theorem can be used to calculate the length of any side in a right-angled triangle. Pythagoras’ theorem can be applied to solve 3-dimensional problems.