Question

Which triangles are congruent according to the SAS criterion?

Answer 1

let's go over what SAS means

if two triangles share 2 side lengths, plus the angle in between the two sides (this is important, the angle has to be between the two indicated sides) then the two triangles are congruent via SAS

take a look at the triangles and see which ones are congruent by SAS. as a hint three of them are congruent and there's one that's not congruent to the others