In the figure below, parallel lines \(l\) and \(m\) are intersected by transversal \(n\), forming the numbered angles. Which of the following congruence statements is NOT necessarily true?

\(\angle{1} \cong \angle{5}\)

\(\angle{2} \cong \angle{8}\)

\(\angle{3} \cong \angle{5}\)

\(\angle{4} \cong \angle{7}\)

\(\angle{6} \cong \angle{8}\)