A quadrilateral with four equilateral sides is a square. Write its four propositions.

A quadrilateral with four equal sides is a square.

2) A quadrilateral with four equilateral sides is not a square.

3) A square is a quadrilateral with four equal sides.

4) A square is not a quadrilateral with four equal sides.

If in doubt, please ask questions; If it has been solved, please adopt it.