Examples of Euclid in the following topics:
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- The discoveries of
several Greek mathematicians, including Pythagoras and Euclid, are still used
in mathematical teaching today.
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- Yang Hui also provided rules for constructing combinatorial arrangements in magic squares, provided theoretical proof for Euclid's forty-third proposition about parallelograms, and was the first to use negative coefficients of 'x' in quadratic equations.
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- Scientists recovered the Alexandrian mathematical, geometric, and astronomical knowledge, such as that of Euclid and Claudius Ptolemy.
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- By 1200 there were reasonably accurate Latin translations of the main works of Aristotle, Euclid, Ptolemy, Archimedes, and Galen—that is, all the intellectually crucial ancient authors except Plato.