The SSS rule states that :
If three sides of one triangle are equal to three sides of another triangle, then the triangles are congruent.
The SAS rule states that :
If two sides and the included angle of one triangle are equal to two sides and included angle of another triangle, then the triangles are congruent.
The ASA rule states that :
If two angles and the included side of one triangle are equal to two angles and included side of another triangle, then the triangles are congruent.
Hope this helps :)
