Write down the two pairs of vertically opposite angles.

Step 1: Two lines intersect at the point, forming four angles labeled $u$, $f$, $p$, and $m$.

Step 2: Vertically opposite angles are the pairs directly opposite each other at the intersection.

From the diagram:
The left angle ($u$) is vertically opposite the right angle ($p$).
The upper angle ($f$) is vertically opposite the lower angle ($m$).

$\angle u \textrm{ and } \angle p$

$\angle f \textrm{ and } \angle m$

The two pairs of vertically opposite angles are $(\angle u, \angle p)$ and $(\angle f, \angle m)$.

(\angle u,\ \angle p)\ \mathrm{and\ (\angle f,\ \angle m)}