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Euclid

325 BCE – 270 BCE Greek mathematician

The mathematician whose Elements defined geometry for two thousand years.

Religion
Greek polytheism assumed but undocumented; almost nothing of his personal life is known.
Affiliations
Worked at Alexandria under the Ptolemies. No secret society.

Euclid gathered and organized Greek geometry into the Elements, building every result from a handful of axioms. This deductive method became the model for rigorous reasoning across mathematics and science. His text was a standard schoolbook into the twentieth century.

In the timeline

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