Two Geometrical Shape are Congruent, only when
1. Corresponding sides are equal
2. Corresponding Interior as well as Exterior Angles are equal.
3. Areas are equal.
⇒Square ABCD and Rhombus GHIJ, have length of their Corresponding side equal , but their interior angles are not equal.
So,⇒ Square ABCD NOT≅ to Rhombus GHIJ