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Elemente der Mathematik


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Volume 64, Issue 4, 2009, pp. 137–145
DOI: 10.4171/EM/126

Published online: 2009-12-24

Another generalisation of Napoleon's theorem

G.C. Shephard[1]

(1) East Anglia University, Norwich, UK

Since its discovery over 150 years ago, Napoleon's theorem has fascinated mathematicians, both professional and amateur alike. At least 150 papers have been published giving proofs, generalisations, variants and history of the theorem. Here we state and prove another generalisation.

Shephard G.C.: Another generalisation of Napoleon's theorem. Elem. Math. 64 (2009), 137-145. doi: 10.4171/EM/126