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Quadrilateral PQRS is a parallelogram. If adjacent angles are congruent, which statement must be true?

A. PQRS is a square.
B. PQRS is a rectangle.
C. PQRS is an isosceles trapezoid.
D. PQRS is a rhombus

  • math -

    ur answer is B

  • math -

    all angles 90 degrees, adjacent sides not necessarily of same length, so B

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