In this triangle \(a^2 = b^2 + c^2\) and angle \(A\) is a right angle. Pythagoras' theorem only works for right-angled triangles, so you can use it to test whether a triangle has a right angle or not.

Pythagoras' theorem describes the relationship between the three sides of a right-angled triangle. It is incredibly useful ...

Their accomplishment adds to the rich history of proofs of the Pythagorean theorem, which states that in a right-angled ...

Here's the deal; there was this Greek guy named Pythagoras ... What it means is that in a right triangle (where one angle equals 90°), the sum of the squares of two sides equals the square ...