If a shape is a rhombus, then all its four sides are of an equal length.
The distance between two points is given by the distance formula:
√((x1 - x2)^2 + (y1 - y2)^2)
Where (x1, y1) and (x2, y2) are the two points.
Put in all possible pairs of the given sides into this formula to verify that the distances, and the lengths of the quadrilateral are the same.
Verify that the shape with vertices at P(-5, 2), Q(-1, 3), R(-2, -1) and S(-6, -2) is a rhombus.
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