The Martin Gardner Interview | FifteenEightyFour | Cambridge University Press On his 90th birthday, in 2005, Don Albers interviewed the legendary Tulsa-born-and-raised polymath....
Posted by Michael Bates on August 22, 2016 2:31 PM
GoGeometry: Incenter, Circumcenter, Centroid, Orthocenter: Journey to the Center of a Triangle. A 1977 instructional film illustrating how the different centers of a triangle are constructed....
Posted by Michael Bates on December 17, 2011 3:39 PM
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