Georg Mohr

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Georg Mohr

1640-1697

Danish mathematician. Initially taught mathematics by his parents, Mohr later studied in Holland, France, and England. He fought in the Dutch-French wars, and was briefly a prisoner of war. Mohr was little known in mathematics until the rediscovery of his lost book Euclides danicus (1672) in a bookstore in 1928. The book contains the theorem and its proof that all Euclidean constructions can be carried out with compasses alone, a result not found again until 125 years later.