3000 B. C. The Pyramids (Egypt). 3 1/7(3.142857.....). The sides and heights of the pyramids of Cheops and of Sneferu at Gizeh are in the ratio 11:7, which makes the ratio of half the perimeter to the height 3 1/7. In 1853, H. C. Agnew, Esq., London, published a letter from Alexandria on evidence of this ratio found in the pyramids being connected or related to the problem of the quadrature of the circle.
KeywordsGeometrical Construction Regular Polygon English Mathematician Circle Digit Inscribe Polygon
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