If quadrilateral ABCD rotates 90° counterclockwise about the origin, what are the coordinates of A′ in quadrilateral A′B′C′D′ ?(2, 1)(-2, -1)(-2, -2)(-2, 0)
Accepted Solution
A:
I believe the answer is (-2,-1) after the original point (2,1) goes through the change of -y,x