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A(4,-1)⇔A'{(4-(-2))cos(-90)-(-1-2)Sin(-90)};{(-1-(-2))Sin(-90)+(-1-2)cos(-90)}⇔A'(-3,-1)
B(4,1) ⇔B'{(4-(-2))cos(-90)-(1-2)Sin(-90)};{(1-(-2))Sin(-90) + (1-2)cos(-90)}⇔B'(-1,-3)
C(6.3) ⇔C'{(6-(-2))cos(-90)-(3-2)Sin(-90)};{(3-(-2))Sin(-90) + (3-2)cos(-90)}⇔C'(1,-5)