Math Open Reference
Math Open Reference: Thales
Contains a detailed biography and discussion of the contributions of the ancient Greek philosopher Thales. Part of a larger mathematics site, this page focuses primarily on his contributions to Geometry.
Other
Livius: Thales of Miletus
Contains a concise summary of the life and major contributions of the ancient Greek Thales of Miletus. Also contains a small picture of a statue of Thales and a diagram that explains Thales's theorem.