Theaetetus

Theaetetus

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. A friend of Socrates and Plato, he is the central character in Plato's eponymous Socratic dialogue.

From *.wikipedia.org,
General Info
.
Male
Date of Birth
January 1st, -0416
Age
2442
Birth Place
Greece, Attica Region
Date of Death
January 1st, -0369
Died Aged
47
Star Sign
Capricorn
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