Napoleon's theorem (English Wikipedia)

Grünbaum 2012 Grünbaum, Branko (2012), "Is Napoleon's Theorem Really Napoleon's Theorem?", American Mathematical Monthly, 119 (6): 495–501, doi:10.4169/amer.math.monthly.119.06.495, S2CID 42928783, Zbl 1264.01010
Scriba, Christoph J (1981). "Wie kommt 'Napoleons Satz' zu seinem namen?". Historia Mathematica. 8 (4): 458–459. doi:10.1016/0315-0860(81)90054-9.
Faifofer (1911), Elementi di Geometria (17th ed.), Venezia, p. 186{{citation}}: CS1 maint: location missing publisher (link), but the historical record cites various editions in different years. This reference is from (Wetzel 1992) Wetzel, John E. (April 1992). "Converses of Napoleon's Theorem" (PDF). The American Mathematical Monthly. 99 (4): 339–351. doi:10.2307/2324901. JSTOR 2324901. Zbl 1264.01010. Archived from the original (PDF) on 2014-04-29.
Grünbaum, Branko (1997). "Isogonal Prismatoids". Discrete & Computational Geometry. 18: 13–52. doi:10.1007/PL00009307.

geometry-math-journal.ro

M. de Villiers, H. Humenberger, B. Schuppar, Jha and Savaran’s generalisation of Napoleon’s theorem, Global Journal of Advanced Research on Classical and Modern Geometries Vol.11, (2022), Issue 2, pp.190-197. http://geometry-math-journal.ro/pdf/Volume11-Issue2/4.pdf
H. Humenberger, B. Schuppar, M. de Villiers. Geometric Proofs and Further Generalizations of Dao Than Oai’s Napoleon Hexagon Theorem, Global Journal of Advanced Research on Classical and Modern Geometries, Vol.12, (2023), Issue 1, pp.158-168. https://geometry-math-journal.ro/pdf/Volume12-Issue1/10.pdf

Faifofer (1911), Elementi di Geometria (17th ed.), Venezia, p. 186{{citation}}: CS1 maint: location missing publisher (link), but the historical record cites various editions in different years. This reference is from (Wetzel 1992) Wetzel, John E. (April 1992). "Converses of Napoleon's Theorem" (PDF). The American Mathematical Monthly. 99 (4): 339–351. doi:10.2307/2324901. JSTOR 2324901. Zbl 1264.01010. Archived from the original (PDF) on 2014-04-29.

Faifofer (1911), Elementi di Geometria (17th ed.), Venezia, p. 186{{citation}}: CS1 maint: location missing publisher (link), but the historical record cites various editions in different years. This reference is from (Wetzel 1992) Wetzel, John E. (April 1992). "Converses of Napoleon's Theorem" (PDF). The American Mathematical Monthly. 99 (4): 339–351. doi:10.2307/2324901. JSTOR 2324901. Zbl 1264.01010. Archived from the original (PDF) on 2014-04-29.

Dublin problems: a collection of questions proposed to the candidates for the gold medal at the general examinations, from 1816 to 1822 inclusive. Which is succeeded by an account of the fellowship examination, in 1823. G. and W. B. Whittaker, London, 1823 (online, 22.8MB)

Grünbaum 2012 Grünbaum, Branko (2012), "Is Napoleon's Theorem Really Napoleon's Theorem?", American Mathematical Monthly, 119 (6): 495–501, doi:10.4169/amer.math.monthly.119.06.495, S2CID 42928783, Zbl 1264.01010

Faifofer (1911), Elementi di Geometria (17th ed.), Venezia, p. 186{{citation}}: CS1 maint: location missing publisher (link), but the historical record cites various editions in different years. This reference is from (Wetzel 1992) Wetzel, John E. (April 1992). "Converses of Napoleon's Theorem" (PDF). The American Mathematical Monthly. 99 (4): 339–351. doi:10.2307/2324901. JSTOR 2324901. Zbl 1264.01010. Archived from the original (PDF) on 2014-04-29.

"Napoleon's Theorem - from Wolfram MathWorld". Mathworld.wolfram.com. 2013-08-29. Retrieved 2013-09-06.
Weisstein, Eric W. "Spiral Similarity". MathWorld.
Weisstein, Eric W. "Inner Napoleon Triangle." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/InnerNapoleonTriangle.html
Weisstein, Eric W. "Outer Napoleon Triangle." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/OuterNapoleonTriangle.html

Grünbaum 2012 Grünbaum, Branko (2012), "Is Napoleon's Theorem Really Napoleon's Theorem?", American Mathematical Monthly, 119 (6): 495–501, doi:10.4169/amer.math.monthly.119.06.495, S2CID 42928783, Zbl 1264.01010
Faifofer (1911), Elementi di Geometria (17th ed.), Venezia, p. 186{{citation}}: CS1 maint: location missing publisher (link), but the historical record cites various editions in different years. This reference is from (Wetzel 1992) Wetzel, John E. (April 1992). "Converses of Napoleon's Theorem" (PDF). The American Mathematical Monthly. 99 (4): 339–351. doi:10.2307/2324901. JSTOR 2324901. Zbl 1264.01010. Archived from the original (PDF) on 2014-04-29.