So... I came up with kind of a problem.

Is there any two dimensional polygon that has a multiple of four as the number of its sides(let us call the number of sides n) where all sides are equal and all angles are equal that is tileable only with itself where n is bigger then 1*4(i.E. NOT a square.), and if not, where and what is the mathematical proof for this?

-☭

assuming that by "all sides are equal and all angles are equal" you mean a regular polygon:
no regular polygon with >4 sides is tileable with itself only (only the regular triangle and the square are)

as for the proof, I don't have a clue :)