Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsGeometric Elements of a Circlehttp://demonstrations.wolfram.com/GeometricElementsOfACircle/]]>http://demonstrations.wolfram.com/GeometricElementsOfACircle/Thales's Theorem: A Vector-Based Proofhttp://demonstrations.wolfram.com/ThalessTheoremAVectorBasedProof/]]>http://demonstrations.wolfram.com/ThalessTheoremAVectorBasedProof/Euclid, Book 3, Proposition 22http://demonstrations.wolfram.com/EuclidBook3Proposition22/]]>http://demonstrations.wolfram.com/EuclidBook3Proposition22/Inscribed and Central Angles in a Circlehttp://demonstrations.wolfram.com/InscribedAndCentralAnglesInACircle/]]>http://demonstrations.wolfram.com/InscribedAndCentralAnglesInACircle/The Bomb Problemhttp://demonstrations.wolfram.com/TheBombProblem/]]>http://demonstrations.wolfram.com/TheBombProblem/The Perpendicular Bisector of a Chordhttp://demonstrations.wolfram.com/ThePerpendicularBisectorOfAChord/]]>http://demonstrations.wolfram.com/ThePerpendicularBisectorOfAChord/A Product of Chord Lengths in a Circlehttp://demonstrations.wolfram.com/AProductOfChordLengthsInACircle/]]>http://demonstrations.wolfram.com/AProductOfChordLengthsInACircle/The Chordal Theoremhttp://demonstrations.wolfram.com/TheChordalTheorem/]]>http://demonstrations.wolfram.com/TheChordalTheorem/Inscribed Angles That Intercept the Same Archttp://demonstrations.wolfram.com/InscribedAnglesThatInterceptTheSameArc/]]>http://demonstrations.wolfram.com/InscribedAnglesThatInterceptTheSameArc/Tangent Circleshttp://demonstrations.wolfram.com/TangentCircles/]]>http://demonstrations.wolfram.com/TangentCircles/Equally Distant Chordshttp://demonstrations.wolfram.com/EquallyDistantChords/]]>http://demonstrations.wolfram.com/EquallyDistantChords/Tangents to a Circlehttp://demonstrations.wolfram.com/TangentsToACircle/]]>http://demonstrations.wolfram.com/TangentsToACircle/Tangent Chord Anglehttp://demonstrations.wolfram.com/TangentChordAngle/]]>http://demonstrations.wolfram.com/TangentChordAngle/Intersecting Secants Theoremhttp://demonstrations.wolfram.com/IntersectingSecantsTheorem/]]>http://demonstrations.wolfram.com/IntersectingSecantsTheorem/Intersecting Chords Theoremhttp://demonstrations.wolfram.com/IntersectingChordsTheorem/]]>http://demonstrations.wolfram.com/IntersectingChordsTheorem/Opposite Angles of a Quadrilateral in a Circlehttp://demonstrations.wolfram.com/OppositeAnglesOfAQuadrilateralInACircle/]]>http://demonstrations.wolfram.com/OppositeAnglesOfAQuadrilateralInACircle/Circles & Triangleshttp://demonstrations.wolfram.com/CirclesTriangles/]]>http://demonstrations.wolfram.com/CirclesTriangles/Three Points Determine a Circlehttp://demonstrations.wolfram.com/ThreePointsDetermineACircle/]]>http://demonstrations.wolfram.com/ThreePointsDetermineACircle/Inscribed Angles in a Circle Subtended by the Same Chordhttp://demonstrations.wolfram.com/InscribedAnglesInACircleSubtendedByTheSameChord/]]>http://demonstrations.wolfram.com/InscribedAnglesInACircleSubtendedByTheSameChord/Thales' Theoremhttp://demonstrations.wolfram.com/ThalesTheorem/]]>http://demonstrations.wolfram.com/ThalesTheorem/