2025年6月美国B卷 · 第 22 题

In triangle ABC and triangle DEF , sides AB and DE each have a side length of 10 inches, and angles A and D  each have an angle measure of 40°. Which of the following additional pieces of information is(are) sufficient to prove whether triangle ABC is congruent to triangle DEF?

I. The measures of angles B and C are equal.
II. The lengths of sides AC and DF  are equal.
III. The lengths of sides BC  and EF are equal.