SSS, SAS, ASA, AAS postulates
Side side side postulate SSS
If the three sides of one triangle are congruent to the three sides of another triangle then the two triangles are congruent
Angle angle side Theorem AAS
If two angles and a noniencluded side of one triangle are congruent to two angles and the corresponding nonincluded side of another triangle then the triangles are congruent
Angle side angle postulate ASA
If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle then the two triangles are congruent
Side angle side postulate SAS
If two sides and the included angle of one triagle are congruent to two sides and the included angle of another triangle, then the two triangles are congruent