QUADRILATERAL

Question

I've tried this question repeatedly? Can any person who knows the analytic geometry field give me an answer? HELP?
Quadrilateral PQRS has vertices P(3, 2), Q(0, 4), R(-2, 1) and S(1, -1)
a) Verify that quadrilateral PQRS is a square.
b) Find the perimeter of the rectangle

Answer 1

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