What is an example of the transitive property of congruence?

Answer: If \( \overline{AB} \cong \overline{CD}\) and \( \overline{CD} \cong \overline{EF}\), then \( \overline{AB} \cong \overline{EF}\).

Explanation: Congruence is transitive: when two figures are each congruent to a third figure, they are congruent to each other. The same holds for angles (e.g., if \(\angle A\cong\angle B\) and \(\angle B\cong\angle C\), then \(\angle A\cong\angle C\)).