Basic geometry problem squares

How can I prove to someone a square has four sides? Thanks.

It's the definition of a square - either you accept the definition or you don't.

Step one: Draw a square
Step two: Show square to person
Step three: (optional) Go to a computer
Step four: (optional) Go to Wikipedia
Step five: (optional) Search square
Step six: (optional) got to the Characterizations part
Step seven (optional) feast upon your opponents stupidity

How can I prove to someone a square has four sides? Thanks.

It is true "by definition !" There is NO PROOF.

@ß