Prove that quadrilateral Q(1, -2), D(13, 4), A(6, 8) and U(-2, 4) is a trapezoid.  Slope of AD ___________ Slope of  QD ___________   Slope of UA ___________ Slope of QU___________ Which segments are parallel?_____________________ Which segments are perpendicular?________________  Is the quadrilateral a trapezoid?  Explain how you know.​