You have the following:
- angle F congruent to angle J
- angle G congruent to angle L
- side FG congruent to side JL
If angles F and J, and G and L are congruent, it is necessary angles H and K are congruent. Due to one side of each triangle is congruent to each other, all sides are congruent.
Then, you can conclude:
ΔFGH ≅ ΔJKL
Moreover, the theorem to specify the congruence between triangles is:
ASA
