An ant, crazed by the sun on a hot Texas afternoon, darts over an xy plane scratched in the dirt. The x and y components of four consecutive darts are the following, all in centimeters: (25, 35), (bx, -45), (-50, cy), (-90, 25). The overall displacement of the four darts has the xy components (-60, -50). What are the magnitude and angle (relative to the positive x axis) of the overall displacement?