Provide the Requested Proof $\mathrm { ABCD }$ Is Any Square with Diagonals

Essay

Provide the requested proof.
-Suppose polygon $\mathrm { ABCD }$ is any square with diagonals $\overline { \mathrm { AC } }$ and $\overline { \mathrm { BD } }$ intersecting at point $\mathrm { F }$ .


What can be said about any point on $\overline { \mathrm { AF } }$ and points $\mathrm { B }$ and $\mathrm { D }$ ?