Question

If P(2, -1), Q(3, 4), R(- 2,3) and S(- 3, - 2) be four points in a plane, show that PQRS  is a rhombus but not a square.

Answer 1

or, All the four sides are equal.

or, PQRS is a rhomhus.

or, triangle PQR is not a right triangle.

or, PQRS is a rhombus but not a square.