Question

figure 1 and figure 2 below are congruent. which side corresponds to side ce?

Explanation:

Step1: Match vertices of congruent figures

When two figures are congruent, corresponding vertices match up. By visual - inspection or proper orientation, we find the matching vertices.

Step2: Identify corresponding side

Once vertices are matched, the side with the same relative position in the other figure is the corresponding side. Here, by matching the figures, we see that side $\overline{MN}$ corresponds to side $\overline{CE}$.

Answer:

$\overline{MN}$