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Interaction ControlsClick on the ">>" button to animate the building up of the cone through its different dimensional parts. Each new part will stretch out, accordianlike, as the tvalue increases. Warning: this demonstration can be quite slow; please be patient. Not much will happen at first, as the zerodimensional section grows. You may use the "Graphics" menu of the graph window to control some of the visual characteristics of your image. For example, you can thicken the lines, or make the surface be filled in (rather than outlined). Use the "Control" menuof the graph window to zoom out if the surface is too large to fit entirely in the window. 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. 