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Interaction ControlsA rectangular region with horizontal and vertical sides and one corner at the origin is an example of a twodimensional object. We can determine any such region by giving the coordinates (c,d) of the point farthest from the origin.
Use the values in the "Controls" window to change the coordinates of the
upper righthand corner. The When you are done with the demonstration, choose the "Exit Demo" menu item from the "Windows" menu of the "Controls" window. The applet will not exit until you do so. 
Mathematics Awareness Month is sponsored each year by the Joint Policy Board for Mathematics to recognize the importance of mathematics through written materials and an accompanying poster that highlight mathematical developments and applications in a particular area. 