Special Properties, SMB-009 MC `PQRS` is a parallelogram. Which of these must be a property of `PQRS`? Line `PS` is perpendicular to line `PQ`. Line `PQ` is parallel to line `PS`. Diagonals `PR` and `SQ` are perpendicular. Line `PS` is parallel to line `QR`. Show Answers Only `D` Show Worked Solution `text{By elimination:}` `A\ \text{and}\ B\ \text{clearly incorrect.}` `C\ \text{true if all sides are equal (rhombus) but not true for all parallelograms.}` `text(Line)\ PS\ text(must be parallel to line)\ QR.` `=>D`
