Question

Points P (-6, 4), Q (-4, 4), R (-4, 2), and S (-6, 2) are plotted on a coordinate grid. Which statement is correct about the points?
Answer They form a square because PR is perpendicular to RS.
They form a square because diagonals PR and QS are congruent.
They do not form a square because the opposite sides are not parallel.
They do not form a square because the sides of quadrilateral PQRS are not congruent