On the following graphs, determine which line segments are congruent.

Two line segments are congruent if they are equal in size.
\overline{AB} and \overline{CD} are congruent.

Two line segments are congruent if they are equal in size.
\overline{AB} and \overline{CD} are congruent.

Two line segments are congruent if they are equal in size.
\overline{AB} and \overline{ED} are congruent.

Two line segments are congruent if they are equal in size.
All pairs are congruent.

Two line segments are congruent if they are equal in size. Here, they all have a different size.
None of the line segments are congruent.

Two line segments are congruent if they are equal in size.
\overline{AB} and \overline{CD} are congruent.

Two line segments are congruent if they are equal in size.
\overline{AC} and \overline{ED} are congruent.