given point (1,2) on a geometric figure, what is the new point that the figure is rotated counterclockwise about the origin 90 degrees?

To rotate a point counterclockwise by 90 degrees about the origin, we swap the x and y coordinates and change the sign of the new x coordinate.

Given the point (1,2), after rotating counterclockwise by 90 degrees about the origin, the new point would be (-2,1).