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Use these simple illustrated formulas to calculate volume and surface area of various shapes. - (Read more)

Slice and complete various figures to form requested shapes. - (Read more)

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. - (Read more)

Shows different types of straight-sided shapes with up to ten sides. Gives the total number of degrees for each side. - (Read more)

Interactive Director movie comparing a fugue by Johann Sebastian Bach to a Möbius strip. - (Read more)

Games, illustrations, and definitions. - (Read more)

Presents problems involving circles and triangles, with proofs, SAT practice quizzes and famous quotes. Also, has examples of geometry in Peruvian culture. - (Read more)

Covers the life of Euclid and a discussion of Euclidean geometry. - (Read more)

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. - (Read more)

Explains and describes geometric terms, measurement of angles, types of figures, coordinate graphs, areas and volumes. - (Read more)

Learn about the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations. - (Read more)