If you rotate A(4,3) and C(-5,1) 180° CCW, what are the new points?

Answer 1

If you rotate points about the origin of coordinates, 180-degrees counter clockwise, then the x-coordinate becomes -x, and the y-coordinate becomes -y. In general, for P(x,y) ==> P'(-x,-y).

So A(4,3) becomes A'(-4,-3), and C(-5,1) becomes C'(5, -1).