| Archimedes' Book of Lemmas | | A collection of all 15 propositions from Archimedes' Book of Lemmas with complete proofs, each accompanied by a Java illustration. |
| Bob's Pages | | A collection of interactive geometry applets. Topics include polyhedra, Poncelet's porism, Soddy's hexlet, Mandelbrot set, Steiner porism, Pappus's chain, Repulsion polyhedra and stereo pictures. |
| Center of Points in 2- or Higher-dimensional Space | | It provides important formulations for finding a center of points in 2 or higher dimensional space. It can be used in drawing delauney triagulation and voronoi diagram in two or higher dimensions. It also describes how many points are required in defining a center in n-dimensional space. |
| Fundamentals of Geometry | | Free online book on geometry in pdf format. Contains material not easily found elsewhere from detailed exposition of elementary absolute geometry based on Hilbert's axioms to more advanced topics. |
| Geometric Group Theory | | Information and resources about geometric group theory and low-dimensional topology. People, groups, meetings, links. |
| Geometry Center | | Web site for the (now closed) Center for the Computation and Visualization of Geometric Structures at the University of Minnesota. Graphics, multimedia, software, teaching resources. |
| Geometry Formulas and Facts | | Excerpts from the 30th Edition of the CRC Standard Mathematical Tables and Formulas (1995), namely, the geometry section minus differential geometry. |
| Geometry from the Land of the Incas | | Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture. |
| Geometry in Action | | Includes collections from various areas in which ideas from discrete and computational geometry meet real world applications. |
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