The width and height of the rectangle become \(a\) and \(b\) in the formula and \(c\) is the diagonal length. Taking the triangle DEG, Pythagoras’ theorem can be used to calculate the length of EG.

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 of the hypotenuse (the longest side).

These two teenage math stars have developed five new proofs of the Pythagorean ... triangle’s angles. The paper challenges ...

Ne'Kiya Jackson and Calcea Johnson from Louisiana used trigonometry to prove the 2,000-year-old Pythagorean theorem, which ...

For example, a right triangle drawn on the surface of a sphere need not follow the Pythagorean theorem. The equation ... 3) Calculus: The formula given here is the definition of the derivative ...