In triangles ABC and DEF, ∠B = ∠E, ∠F = ∠C and AB = 3DE, then the two triangles are

1. congruent but not similar

2. similar but not congruent

3. neither congruent nor similar

4. congruent as well as similar

Given,

∠B = ∠E, ∠F = ∠C and AB = 3DE.

∴ Two angles of the one triangles are equal to corresponding two angles of the other, but sides are not equal.

∴ Triangles are similar but not congruent.

Hence, Option 2 is the correct option.