Change coordinates for A, B, C so that everyone in your group has a different triangle.[br]From the drop down boxes, draw the line y = -x.  Choose from the drop down boxes and reflect the triangle across the line y = x.   Write the preimage and image points, labeling them correctly.  [br]Find the algebra rule that will take you from preimage to image.  (x,y)   to  (x', y')