Quadrilateral WXYZ is located at W(3, 6), X(5, -10), Y(-2, -4), Z(-4, 8). A rotation of the quadrilateral is located at W�(-6, 3), X�(10, 5), Y�(4, -2), Z�(-8, -4). How is the quadrilateral transformed?
A. Quadrilateral WXYZ is rotated 90º counterclockwise about the origin
B. Quadrilateral WXYZ is rotated 90º clockwise about the origin
C. Quadrilateral WXYZ is rotated 180º about the origin

Question

Quadrilateral WXYZ is located at W(3, 6), X(5, -10), Y(-2, -4), Z(-4, 8). A rotation of the quadrilateral is located at W�(-6, 3), X�(10, 5), Y�(4, -2), Z�(-8, -4). How is the quadrilateral transformed?
	A.	Quadrilateral WXYZ is rotated 90º counterclockwise about the origin
	B.	Quadrilateral WXYZ is rotated 90º clockwise about the origin
	C.	Quadrilateral WXYZ is rotated 180º about the origin

dumbcow · Answer

focus on 1 point, say W.  It moved from the 1st quadrant to the 2nd quadrant, therefore moving counter-clockwise
Now draw a line from the origin to each point (W and W') what is the angle between them look like?