point F on the coordínate grid is reflected across a line to create point F . Then points E, F , and F are connected to create a triangle . Kari says point E must be perpendicular bisector of the line FF , regardless of the line across which point F was reflected

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?