EXERCISES to EXPLORE with this APPLET 
	  
	  In this applet, you can create biarcs, and piecewise circular curves through 
              the use of biarcs. Each biarc is created by specifying two points 
              and tangent lines. The point of tangency is created as the first 
              point and the second point then defines the tangent line. Additional 
              tangent lines are constructed similarly. 
              
                - Create a biarc. Visualize the triangle determined by the two 
                  points of tangency and the intersection of the tangent lines. 
                  Does the biarc always lie within this triangle? Determine heurestic 
                  conditions under which the biarc will lie withing this triangle.
 
                - Create a biarc. Does the biarc always lie on one side of its 
                  prescribed tangent lines? Determine heurestic conditions under 
                  which the biarc will lie on one side of its prescribed tangent 
                  lines.
 
                - How do you create a smooth closed piecewise circular curve 
                  through the use of biarcs?
 
                - How do you create a circle using biarcs?
 
               
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