Answer:
Square
Step-by-step explanation:
If you plot the points on a graph, you can see that it looks like a square. To verify that this is true, use the distance formula
[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
If you plug the values of the coordinates of PQRS into this equation, you can prove that the shape is a square with sides equaling 5.