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. Segme

Which is a true statement he could write? (6 points)

a
Angle PRQ measures 45°.

b
Angle PQR measures 85°.

c
Angle PQR measures 40°.

d
Angle PRQ measures 50°.