Olry Terquem
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Olry Terquem (1782 - 1862) was a French mathematician, best known for his work in geometry, where he proved the Feuerbach's theorem about the nine point circle of a given triangle. As one of the editors of the Nouvelles Annales he published in 1842 the second analytical proof of the Feuerbach's theorem that the nine point circle touches the incircle and the excircles of a triangle.
Terquem was among the first who recognized how great Galois' work is.