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Who used the Pythagorean theorem before Pythagoras?

The Babylonians are believed to have used a version of the Pythagorean theorem before Pythagoras. This is evidenced by the clay tablet known as Plimpton 322, which dates back to the Old Babylonian period (1800-1600 BCE).

Did you know?

Did you know that the Pythagorean theorem, which states that in a right-angled triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the other two sides, was actually used by many ancient civilizations before Pythagoras? Although Pythagoras is credited with discovering and proving this mathematical relationship, evidence suggests that the Babylonians, Egyptians, and Chinese were aware of this theorem even before his time. These civilizations used it for practical purposes such as surveying, construction, and creating accurate right angles in architectural designs. This remarkable theorem has left an indelible mark in the world of mathematics and its applications across various cultures throughout history.