graph a triangle (lmn) and rotate it 180° around the origin to create triangle l′m′n′.

describe the transformation using words. make sure you refer to the characteristics and the coordinates.
draw a line through points l and l′ and through m and m′. what do you notice about the lines you drew? do you think you would notice the same characteristics if you drew another line through points n and n′? how do you know?