Abstract
IN NATURE of December 24 (p. 189) a simple proof of Euclid II. 9 and 10 is given, which it is stated is believed to be new. It may therefore be of interest to your readers to know that these proofs are given in an edition of Euclid which we have now in the press. As the author, Mr. Brent, is resident at Dunedin, New Zealand, we are unable to state whether he lays claim or not to any originality in respect to them : in any case, as he has been engaged in mathematical teaching for many years, these and similar proofs of other propositions in Euclid II. have clearly been more widely employed than has been, supposed.
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PERCIVAL AND CO. Simple Proof of Euclid II. 9 and 10.. Nature 45, 250 (1892). https://doi.org/10.1038/045250b0
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DOI: https://doi.org/10.1038/045250b0
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