# Directory of Geometry Resources

## Resources in This Category

• #### Areas, Volumes, Surface Areas

http://math2.org/math/geometry/areasvols.htm
Use these simple illustrated formulas to calculate volume and surface area of various shapes.

• #### Brain Teasers: Geometry Puzzles

http://brainden.com/geometry-puzzles.htm
Slice and complete various figures to form requested shapes.

• #### Cynthia Lanius' Lessons: Geometry Online

http://math.rice.edu/~lanius/Geom/
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

http://www.mathleague.com/index.php?option=com_content&amp;view=article&amp;id=75:figuresandpolygons&amp;catid=31:general
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

http://jan.ucc.nau.edu/~tas3/wtc/i10.html
Interactive Director movie comparing a fugue by Johann Sebastian Bach to a Möbius strip.

• #### Geometry

http://www.coolmath4kids.com/geometrystuff.html
Games, illustrations, and definitions.

• #### 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

http://www.obkb.com/dcljr/euclid.html
Covers the life of Euclid and a discussion of Euclidean geometry.

• #### 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 Math League - Geometry

Explains and describes geometric terms, measurement of angles, types of figures, coordinate graphs, areas and volumes.

• #### Tim's Triangular Page

http://sakharov.net/triangle.html
Learn about the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations.

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