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Official 2018 Paper 2 · Q5

Paper 2Logic & proofGeometry

The two diagonals of the quadrilateral QQ are perpendicular.

Consider the following statements:

  • I One of the diagonals of QQ is a line of symmetry of QQ.
  • II The midpoints of the sides of QQ are the vertices of a square.

Which of these statements is/are necessarily true for the quadrilateral QQ?

Aneither of them
BI only
CII only
DI and II

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