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the entire directory only in Geometry/Non-Euclidean Top: Science: Math: Geometry: Non-Euclidean  (8) Sites: Euclidean and Non-Euclidean Geometry with The Geometer's Sketchpad - Conference talk by Scott Steketee with downloadable sketches. NonEuclid - Hyperbolic Geometry Article & Applet - Software simulation offering straightedge and compass constructions in hyperbolic geometry. Non-Euclidean Geometry - A historical account with links to biographies of some of the people involved. Non-Euclidean Geometry - Mathematics and the Liberal Arts - A resource for student research projects and for teachers interested in using the history of mathematics in their courses. The Ontology and Cosmology of Non-Euclidean Geometry - A philosophical essay. References for Non-Euclidean Geometry - A bibliographic reference list of books and articles on non-Euclidean geometries, part of the MacTutor History of Mathematics archive. Seminar on the History of Hyperbolic Geometry - Seminar notes by Greg Schreiber. Spherical Trigonometry, Arc Distance Formula - Finding the shortest distance between two points on the earth given latitude and longitude. Download ARC_CALC_3, Microsoft Excel version, A Spherical Triangle Calculator by James Q. Jacobs. Last update: 21:40 PT, Monday, November 2, 2009 Help build the largest human-edited directory on the web. Submit a Site - Open Directory Project - Become an Editor