Historical Nonfiction

Move Over, Pythagoras

• Ancient Indians knew about the pythagorean theorem, because the Sulbasutras(earliest dating at c. 800- 600 BCE) discusses it, with a different name of course. They used the form solely for the orientation, shape, and area of religious alters, but still, they knew about it.
• The Chinese had a whole treatise about mathematics while Pythagoras was inventing it as a field in the West: The Arithmatical Classic of Gnomon and the Circular Paths of Heaven, c. 500-200 BCE. This treatise, which might predate Pythagoras, gives both a statement and a geometric illustration of the pythagorean theorem.
• Babylonians knew about it too, sort of. They had rules for creating pythagorean triples, ie, three lengths that will make perfect right triangles every time.

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