Introduction to the Works of Euclid [ Profile ] - Covers the life of Euclid and a discussion of Euclidean geometry.

	Geometry [ Profile ] - Games, illustrations, and definitions.

	Geometria [ Profile ] - A program for computing lines, surfaces and volumes of the main plane and solid figures, through direct and indirect formulas. Includes multiple languages.

	The Pythagorean Theorem Lesson [ Profile ] - A lesson on the pythagorean theorem with the objective that the you will discover for yourself the actual theorem.

	Fugues of the Well-Tempered Clavier [ Profile ] - Interactive Director movie comparing a fugue by Johann Sebastian Bach to a Möbius strip.

	Geometry from the Land of the Incas [ Profile ] - Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture.

	The Everlasting Pi [ Profile ] - The history, uses,and creator of pi and also some fun facts, jokes and songs.

	Areas, Volumes, Surface Areas [ Profile ] - Use these simple illustrated formulas to calculate volume and surface area of various shapes.

	Figures and Polygons [ Profile ] - Shows different types of straight-sided shapes with up to ten sides. Gives the total number of degrees for each side.

	Spaceship Builder [ Profile ] - Use a virtual geoboard to help Dr. Marbles design a new fleet of cyberspace ships. From PBS Kids.

	Point Out the View [ Profile ] - Use visualization to determine how four different people see a set of 3-D blocks. From PBS Kids.

	Tangrams [ Profile ] - Choose a puzzle, then click and drag virtual tangram pieces to solve it. From PBS.

	Geometry [ Profile ] - Explains and describes geometric terms, measurement of angles, types of figures, coordinate graphs, areas and volumes.

	Tim's Triangular Page [ Profile ] - Learn about the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations.

	Teen Math Whizzes Go Euclid One Better [ Profile ] - 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.

	Cynthia Lanius' Lessons: Geometry Online [ Profile ] - 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.

	Brain Teasers: Geometry Puzzles [ Profile ] - Slice and complete various figures to form requested shapes.

	Mad Maths [ Profile ] - Contains proposed mathematical theorems in a fun way.

	Spaghetti and Meatballs For All [ Profile ] - Webquest for 3rd-8th graders comparing the perimeter and area of rectangles. Relates to the book "Spaghetti and Meatballs For All!" by Marilyn Burns.