The pairs of triangles appear to be congruent is A. Triangles 3 and 4
Triangles are congruent if their corresponding sides and angles are equal.
In this case, Triangles 3 and 4 have the same angles and equal side lengths, satisfying the conditions for congruence. Therefore, triangles 3 and 4 appear to be congruent.
So, the pairs of triangles that appear to be congruent are Triangles 3 and 4.