Answer: 1 is not possible, 2 is SAS, and 3 is SSS
1 is AAA, which is not a triangle congruency theorem, thus not possible.
The markings on 2 display two congruent sides with a congruent angle between, and is thus SAS.
3 shows two congruent side markings and a shared side length, thus 3 sides are congruent (SSS).
