The regular pentagram, which has a regular pentagon inscribed within it, was the Pythagoreans' symbol | ", Cambridge Archaeological Journal, vol |
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, "Rhetorical Prototypes in Architecture: Measuring the Acropolis with a Philosophical Polemic", Communication Quarterly, Vol | Fink, Karl; Beman, Wooster Woodruff; 1903 |
Roger Allard, Sur quelques peintre, Les Marches du Sud-Ouest, June 1911, pp.
1The Best of Astraea: 17 Articles on Science, History and Philosophy | Washington, DC: The Mathematical Association of America |
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"The golden section: A most remarkable measure" | Cook, Theodore Andrea 1979 [1914] |
1571—1630 proves that the golden ratio is the limit of the ratio of consecutive Fibonacci numbers, and describes the golden ratio as a "precious jewel": "Geometry has two great treasures: one is the , and the other the division of a line into extreme and mean ratio; the first we may compare to a measure of gold, the second we may name a precious jewel.
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