Answer
$\angle$$1$ is congruent to $\angle$$3$
Work Step by Step
We can prove this because we know that $\overline{AB}$ $\parallel$ $\overline{CF}$.Since those two lines are parallel this means that they produce congruent angles when they meet another segment or line. This means that $\angle$$2$ is congruent with $\angle$$1$. We also know that $\angle$$3$ is congruent with $\angle$$2$, therefore, we can now conclude that $\angle$$1$ is congruent with $\angle$$3$.
