Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsBézier Curve Approximation of an Archttp://demonstrations.wolfram.com/BezierCurveApproximationOfAnArc/]]>http://demonstrations.wolfram.com/BezierCurveApproximationOfAnArc/Axial Gradienthttp://demonstrations.wolfram.com/AxialGradient/]]>http://demonstrations.wolfram.com/AxialGradient/Radial Gradienthttp://demonstrations.wolfram.com/RadialGradient/]]>http://demonstrations.wolfram.com/RadialGradient/