<ul><li>Thales of Miletus was an ancient Greek philosopher known for his contributions to philosophy, science, and mathematics.</li><li>He is considered one of the pioneers in using logical reasoning to explain natural phenomena.</li><li>Thales is known for formulating and proving geometric principles, including the angle in a semicircle and congruency of triangles.</li><li>He also used similar triangles to calculate distances, marking an important development in mathematics.</li></ul>

Founder of Mathematics:

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