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11 September, 04:37

If all four angles of a quadrilateral are right angles, then the quadrilateral is a square. Which of the following is a counterexample to this assertion?

A. a rectangle that is not a square

B. a trapezoid

C. a parallelogram that is not a rectangle

D. a rhombus that is not a square

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Answers (1)
  1. 11 September, 07:44
    0
    Answer is choice A.

    We can draw out a rectangle that is stretched out and not a square. This rectangle will have all four angles equal to 90 degrees (right angles).
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