Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsThe Product of the Inradius and Semiperimeter of a Trianglehttp://demonstrations.wolfram.com/TheProductOfTheInradiusAndSemiperimeterOfATriangle/]]>http://demonstrations.wolfram.com/TheProductOfTheInradiusAndSemiperimeterOfATriangle/The Product of an Altitude and the Circumradius of a Trianglehttp://demonstrations.wolfram.com/TheProductOfAnAltitudeAndTheCircumradiusOfATriangle/]]>http://demonstrations.wolfram.com/TheProductOfAnAltitudeAndTheCircumradiusOfATriangle/The Product of the Side Lengths of a Trianglehttp://demonstrations.wolfram.com/TheProductOfTheSideLengthsOfATriangle/]]>http://demonstrations.wolfram.com/TheProductOfTheSideLengthsOfATriangle/The Medial Triangle and Concurrency at the Nagel Pointhttp://demonstrations.wolfram.com/TheMedialTriangleAndConcurrencyAtTheNagelPoint/]]>http://demonstrations.wolfram.com/TheMedialTriangleAndConcurrencyAtTheNagelPoint/Four Concurrent Lines in a Cyclic Quadrilateralhttp://demonstrations.wolfram.com/FourConcurrentLinesInACyclicQuadrilateral/]]>http://demonstrations.wolfram.com/FourConcurrentLinesInACyclicQuadrilateral/A First Morley Triangle Concurrencehttp://demonstrations.wolfram.com/AFirstMorleyTriangleConcurrence/]]>http://demonstrations.wolfram.com/AFirstMorleyTriangleConcurrence/Nagel's Theoremhttp://demonstrations.wolfram.com/NagelsTheorem/]]>http://demonstrations.wolfram.com/NagelsTheorem/The Carpets Theoremhttp://demonstrations.wolfram.com/TheCarpetsTheorem/]]>http://demonstrations.wolfram.com/TheCarpetsTheorem/