1.

Let P, Q, R and S be the points on the plane with position vectors −2^i−^j,4^i,3^i+3^j and −3^i+2^j, respectively. The quadrilateral PQRS must be a

Answer»

Let P, Q, R and S be the points on the plane with position vectors
2^i^j,4^i,3^i+3^j and 3^i+2^j, respectively. The quadrilateral PQRS must be a




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