Which triangle pair shows similar triangles?Triangle Pair 2Triangle Pair 1DBBАDCTriangle Pair 3BTriangle Pair 4АBCАсTriangle Pair 1Triangle Pair 2Triangle Pair 3Triangle Pair 4

Okay, here we have:
Considering that the first pair shows a pair of angles that are congruent and the middle angles are vertical angles. The other options are not necessarily similar. So, we have that the correct option is the first.