Answer:
1. ASA
2.SSS
3. AAS
4. HL
5. it cannot be proven congruent (not satisfy any criteria)
6. ASA (the top angle of each triangle are congruent)
7. SAS
8. SSS
9. HL
10. AAS
11. it cannot be proven congruent (not satisfy any criteria)
12. SAS or AAS or ASA (the three angles of each triangle are congruent)
Explanation:
In the picture attached, the triangles are shown. The criteria are:
SSS: side side side
SAS: side angle side
ASA: angle side angle
AAS: angle angle side
HL: hypotenuse-leg (only valid for right triangles)