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The Secrets of Triangles: A Mathematical Journey

4.06  ·  Rating details ·  16 ratings  ·  0 reviews
Everyone knows what a triangle is, yet very few people appreciate that the common three-sided figure holds many intriguing "secrets." For example, if a circle is inscribed in any random triangle and then three lines are drawn from the three points of tangency to the opposite vertices of the triangle, these lines will always meet at a common point - no matter what the shape ...more
Hardcover, 387 pages
Published August 24th 2012 by Prometheus Books (first published January 1st 2012)
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Alfred S. Posamentier (born October 18, 1942) is among the most prominent American educators in the country and is a lead commentator on American math and science education, regularly contributing to The New York Times and other news publications. He has created original math and science curricula, emphasized the need for increased math and science funding, promulgated criteria by which to select ...more