Thales of Miletus (624 BC - 547 BC) - Biography - MacTutor History of Mathematics

Thales was the first known Greek philosopher, scientist and mathematician. He is credited with five theorems of elementary geometry.

Thales of Miletus; c. 624/623-c. 548/545 BC), one of the Seven Sages

The History of Mathematics Early Greek - ppt download

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Greek mathematics - Wikipedia

Thales (C.624-546 BCE)

Thales of Miletus - Wikipedia

Thales of Miletus (634-546 BC) -- from Eric Weisstein's World of Scientific Biography

Thales, Life, Philosophy

Greek mathematics - Wikipedia

THALES of MILETUS (624 – 545 BCE)

Thales of Miletus - World History Encyclopedia

Thales of miletus hi-res stock photography and images - Alamy

Thales Biography - Facts, Childhood, Family Life & Achievements of Ancient Greek Philosopher

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Thales of miletus hi-res stock photography and images - Alamy