Question 657897
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Note: Center of the Circle is at the Midpoint of this diameter 
endpoints of the diameter are:
 Midpoint Pt(x,y):  ( {{{(x[1] + x[2])/2}}}, {{{(y[1] + y[2])/2  )}}})
A(1/2,5) and 
B(-2/3,-1/2)   Midpoint (-1/12, 9/4)