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Note: This problem has dynamic elements. This means elements such as numbers and consequently the step-by-step solution and the final answer may change overtime. Therefore, there may be a difference between a problem that is published online and the same problem exported into a PDF document.
The distance between point A and B is .
The midpoint between points A and B has the coordinates .
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and 
be the coordinates of the end points of a line. Calculate the length of this line and the coordinates of its midpoint.
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