Answer:
side angle side (SAS) when two sides and an included angle is equal to the two sides and an included angle in the other, it is congruent
side side side (SSS) when all sides are equal to all sides of the other triangle, they are congruent
angle angle side (AAS) when two angles and a nonincluded side is equal to two angles and a non included side in the other triangle, it is congruent
Right angle hypotenuse side (RHS) if the hypotenuse and one side of the triangle is equal to the hypotenuse and one side of the other, it is congruent
Explanation:
SAS, SSS, AAS are postulates and RHS is a theorem
hope that helps :)