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Theaetetus
Greek mathematician (c.417-c. 369 BCE) · Academics · Lived 417 BC to 369 BC · aged 48
Theaetetus of Athens, possibly the son of Euphronius of the Athenian deme Sunium, was a Greek mathematician. His principal contributions were on irrational lengths, which was included in Book X of Euclid's Elements and proving that there are precisely five regular convex polyhedra.
Theaetetus is read about 33 times a day, in 30 languages.
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About this person
A friend of Socrates and Plato, he is the central character in Plato's eponymous Socratic dialogue.
Category
Academics
Type
Academic
Status
Deceased
Dates
Lived 417 BC to 369 BC · aged 48