Which statement about quadrilaterals is true?
  1. All parallelograms are quadrilaterals, but not all quadrilaterals are parallelograms
  2. All rectangles are squares, but not all squares are rectangles
  3. All trapezoids are squares, but not all squares are trapezoids
  4. All parallelograms are rectangles, but not all rectangles are parallelograms
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Can you answer 10 correctly?