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Using Midpoint and Distance Formulas

Using Midpoint and Distance Formulas 1.4 - Solution

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We know that has the same length as because they have matching tick-marks. This means that is the midpoint of Therefore, is the segment bisector.

Since and are the same, the expressions for their lengths must be equal. We can set the two expressions equal to one another and solve for
The length of is given by We can substitute for to find