First, we have to remember the two formulas that we need to use in this question:
Now we just need to replace in each formula the values for each point
Remember that you can choose your two points as you want, it doesn't change the result
Finally, we found that every side of the quadrilateral has the same length (9.219 length units)
The sides ZW and XY have the same slope
The sides YZ and WZ have the same slope.
So the quadrilateral is a rhomboid.