Squares don't exist. you cannot prove otherwise
random pic im at work
>>8971729
2^2 = 4 = real
i^2 = -1 = real
Some squares are real
>>8972038
then it's settled. Squares don't exist.
no 2D shape exists in a 3 dimensional Universe. If the 2D universe uses atoms, there could never be a perfect 90° angle, due to the Atoms not being perfectly spherical as many models portray it to be.