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Learn and teach geometry and algebra with GeoGebra

Posted by: Anonymous [ip: 68.57.29.63] on October 24, 2007 08:38 PM
Very nice! The link to the dynamic worksheet (Pythagorean theorem) shows a construction proving the theorem which was discovered by then general James Garfield of the United States Army. He would later become a U.S. president who was unfortunately assassinated.

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