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Theaetetus (mathematician) |
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Theaetetus (mathematician)Theaetetus (c. 417 B.C. – 369 B.C.) was a Greek mathematician of Geometry. His principal contributions were on irrational lengths, which was included in Book X of Euclid's Elements.He was described as having a short nose and protruding eyes. Much of what we know of him comes from Plato. The Theaetetus crater on the Moon is named after him.
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