Ammon (geometer) From Wikipedia, the free encyclopedia 3rd-century Roman geometrician Ammon (Greek Ἄμμων) was a geometrician who made a measurement of the walls of Rome, around the time of the first invasion of the Goths, that is, the 3rd century AD, and found them to be 21 miles in circumference.[1][2] ↑ Olympiodorus, ap. Phot. Cod. 80, p. 63, ed. Bekker ↑ Smith, Philip (1867). "Ammon". In William Smith (ed.). Dictionary of Greek and Roman Biography and Mythology. Vol. 1. Boston: Little, Brown and Company. p. 145. Archived from the original on December 17, 2005. This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "Ammon". Dictionary of Greek and Roman Biography and Mythology. This ancient Roman biographical article is a stub. You can help Wikipedia by expanding it.vte Related Articles