The rotation is 90° counter clockwise.
<u>Step-by-step explanation:</u>
Triangle GHJ has the points G(2,5), H(3,3) and J(1,4)
And the coordinates changes after 90° counterclockwise rotation,
the points are changed from (x,y) to (-y, x) ,
so the triangle G'H'J' has the points G'(-5,2), H'(-3,3), J'(-4,1).
