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Today is Girard Desargues's Birthday!
Happy Birthday

Born:  February 21, 1591
in Lyon, France

Died:  September ??, 1661
in Lyon, France

Desargues was the founder of the field of projective geometry, and was one of the first Western mathematicians to look at geometry from other than a Greek point of view. He was a friend and contemporary of several other great French mathematicians, including René Descartes, Marin Mersenne, and Blaise Pascal.