Non-Euclidean geometry that are both perpendicular to a third line: Euclidean geometry, named after the Greek mathematician Euclid, includes some of the oldest known mathematics, and geometries that deviated from this were not widely accepted as legitimate until the 19th century. The debate that eventually led to the discovery of the non-Euclidean geometries began almost as soon as Euclid's work "Elements" was written. In the "Elements", Euclid began with a limited number of assumptions (23 definitions, five common notions, and five postulates) and sought to prove all the other results (propositions) in the work. The most notorious of the postulates is often
Ptolemy of Mauretania recover money from Ptolemy. Ptolemy is a minor character in the novels by Robert Graves, "I Claudius " and "Claudius the God". He appears in Stephanie Dray's novel "Daughters of the Nile", which marked the end of the trilogy focusing on Ptolemy's mother. Throughout Morocco and Algeria, statues have survived that belonged to Ptolemy. There is a nude statue of him, dated from the 1st century, which is on display at the Rabat Museum in Morocco. His sculpted images are of a youthful appearance and particularly those first portraits created during the reign of JubaII virtually show his relations to