Let's find the midpoint of $FA$ and $AN$.
The midpoint $M_{FA}$ of $FA$ is given by $\left(\frac{x_{F}+x_{A}}{2},\frac{y_{F}+y_{A}}{2}\right) = \left(\frac{6+7}{2},\frac{0+7}{2}\right) = (6.5,3.5)$.
The midpoint $M_{AN}$ of $AN$ is given by
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