A collection of 43 proofs - some interactive - of the Pythagorean theorem.
A Visual Dictionary of Special Plane Curves with graphics.
Discusses the perimeter of polygons, area of trapezoids, and challenge exercises. Available on CD only are the area of triangles and parallegrams, as well as practice exercises with solutions.
Discusses the differences between the different types of these straight sided figures. Also, explains the difference between regular and irregular shapes.
Explains the basic properties, formulas, theorems and different types of triangles. Includes proofs and illustrations.
Images of conics by Jill Britton.
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