Question 1093568:  If three points A, B, C in a plane have coordinates (-2,1), (1,6) and (8,1), respectively the distance between A and C is..? 
 Answer by Alan3354(69443)      (Show Source): 
You can  put this solution on YOUR website! Question 1093517 
If three points A, B, C in a plane have coordinates (-2,1), (1,6) and (8,1), respectively 
the distance between A and B is..? 
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It's a right triangle calculation - find the hypotenuse. 
  
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Do the other 2 the same way. 
Know this.  It will come up often. 
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