If the 2 given points are endpoints, then we're in business. The formula for the midpoint is [tex]M=( \frac{ x_{1}+ x_{2} }{2}, \frac{ y_{1} + y_{2} }{2}) [/tex]. If the endpoints of our segment are the coordinates (1,2) and (12,14), our formula would be filled in as follows: [tex]M=( \frac{1+12}{2}, \frac{2+14}{2}) [/tex] which simplifies to (13/2, 8). See? It's pretty simple once you know how to do it.
