Definition: Pythagoreanism, also known as Pythagoreanism or Classical Geometry, is a philosophical and religious belief system that originated in ancient Greece. It holds that the sum of the two sides of a right triangle equals the length of the hypotenuse. The belief was founded on the teachings of Pythagoras (c. 570-495 BC), who lived during the Classical period, which included the 6th and 5th centuries BC. He is considered one
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