Euclidian geometry is geometry as first propounded in the axioms of Euclid about 300 B.C. Euclidian geometry is based on the concept of flat and endless space, as opposed to the concept of curved space, as used in plotting the longitudes of a spherical body. In the flat space concept, parallel longitudinal lines never meet as they eventually must in projections on the exterior of a sphere, as the earth's longitudes do at the North and South Poles.
- Percy L. Greaves, Jr. "Mises Made Easier ", 1974. Referenced 2014-07-11.