To prove any two triangles congruent, We can follow 5 ways: SSS, SAS, ASA, AAS and HL SSS means 3 sides are equal. SAS means any two sides and one angles are equal ASA means 2 angles and 1 side between them are equal AAS means 2 angles and 1 side are equal HL means in the right angled triangle, the hypotenuse and the leg are equal. So, in this way we can prove any two triangles are congruent.