Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsThe Area of Part of an Isosceles Trianglehttp://demonstrations.wolfram.com/TheAreaOfPartOfAnIsoscelesTriangle/]]>http://demonstrations.wolfram.com/TheAreaOfPartOfAnIsoscelesTriangle/