T(8,15) is the midpoint of CD. The coordinates of D are (8,20). What are the coordinates of C?
The coordinates of C must be (8,10).
If you plug in the values given in the midpoint formula
\(8= \frac{8+(8)}{2}\)
and \(15= \frac{20+(10)}{2}\)
it matches perfectly with the provided midpoint
The mid point is 5 away from d so it should be five away from c. 8,5