Who was Thales?
Thales was a greek mathematician. He is famous for the theorem named after him - Thales' theorem - stating that any triangle over a diameter touching a semicircle is rectangular.
<START_INST>Who was Thales?<END_INST><START_CTX><END_CTX><START_A>Thales was a greek mathematician. He is famous for the theorem named after him - Thales' theorem - stating that any triangle over a diameter touching a semicircle is rectangular.<END_A>