Euclidean geometry Geometry of the type described originally by Euclid in his book Elements and based on five axioms, one of which is the controversial parallel postulate. Various forms of non-Euclidean geometry began to emerge in the 19th century, with enormous implications for science and philosophy. Related categories GEOMETRY • SPACE AND TIME TOPOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |