| Areas, Volumes, Surface Areas: Use these simple illustrated formulas to calculate volume and surface area of various shapes. |
| Brain Teasers: Geometry Puzzles: Slice and complete various figures to form requested shapes. |
| Cynthia Lanius' Lessons: Geometry Online: Have fun learning through activities about polygons, triangles, circles, and the volume of cylinders. Page includes an historic timeline, SAT type quiz, and glossary of terms. |
| Figures and Polygons: Shows different types of straight-sided shapes with up to ten sides. Gives the total number of degrees for each side. |
| Fugues of the Well-Tempered Clavier: Interactive Director movie comparing a fugue by Johann Sebastian Bach to a Möbius strip. |
| Geometria: A program for computing lines, surfaces and volumes of the main plane and solid figures, through direct and indirect formulas. Includes multiple languages. |
| Geometry: Games, illustrations, and definitions. |
| Geometry: Explains and describes geometric terms, measurement of angles, types of figures, coordinate graphs, areas and volumes. |
| 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. |
| Introduction to the Works of Euclid: Covers the life of Euclid and a discussion of Euclidean geometry. |
| Mad Maths: Contains proposed mathematical theorems in a fun way. |
| Point Out the View: Use visualization to determine how four different people see a set of 3-D blocks. From PBS Kids. |
| Spaceship Builder: Use a virtual geoboard to help Dr. Marbles design a new fleet of cyberspace ships. From PBS Kids. |
| Tangrams: Choose a puzzle, then click and drag virtual tangram pieces to solve it. From PBS. |
| Teen Math Whizzes Go Euclid One Better: Features a discussion about the works of two teenagers, David Goldenheim and Daniel Litchfieldm, from Connecticut. They helped find a solution that eluded Euclid in finding a method to partition a line into any number of equal sections. |
| The Everlasting Pi: The history, uses,and creator of pi and also some fun facts, jokes and songs. |
| The Pythagorean Theorem Lesson: A lesson on the pythagorean theorem with the objective that the you will discover for yourself the actual theorem. |
| Tim's Triangular Page: Learn about the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations. |
Classical
