Marc is writing statements to prove that the sum of the measures of interior angles of triangle PQR is equal to 180°. Line m is parallel to line n. Line n is parallel to line m. Triangle PQR has vertex P on line n and vertices Q and R on line m. Angle QPR is 85 degrees. Segment PQ makes 45 degree angle with line n and segment PR makes 50 degree angle with line n. Which is a true statement he could write? (6 points) Angle PRQ measures 45°. Angle PQR measures 85°. Angle PQR measures 40°. Angle PRQ measures 50°.