A high school teacher didn't expect a solution when she set a 2,000-year-old Pythagorean Theorem problem in front of her students. Then Calcea Johnson and Ne'Kiya Jackson stepped up to the challenge.

Pythagoras’ theorem is always true for right-angled triangles. 130 is not the same as 121. As 𝒂² + 𝒃² does not equal 𝒄², the triangle cannot be a right-angled triangle.

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