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Classroom Notes

The characterizations of triangles using the nine-point circles

Pages 972-982 | Received 06 Jul 2011, Published online: 21 Dec 2011

References

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  • Hobson , EW . 1957 . A Treatise on Plane and Advanced Trigonometry , New York : Dover Publications .
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  • Maor , E . 2007 . The Pythagorean Theorem, A 4,000-year History , Princeton, NJ : Princeton University Press .
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  • Posamentier , AS . 2010 . The Pythagorean Theorem: The Story of its Power and Beauty , Amherst, NY : Prometheus Books .
  • Sparks , JC . 2008 . The Pythagorean Theorem, Crown Jewel of Mathematics , Bloomington, IN : Author House .

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