2. A parallelogram has opposite sides and opposite angles equal.

3. A square and a rhombus have diagonals that bisect at right angles.

4. A kite and an isosceles trapezium have diagonals that are equal in length.

5. Some rhombuses are squares.

6. The diagonals of a parallelogram cross perpendicularly.

7. A kite and a rhombus have diagonals that bisect the angles.

8. Some quadrilaterals are trapeziums.

9. All kites are quadrilaterals.

10. All quadrilaterals are parallelograms.

11. All rectangles are squares.

12. All rhombuses are parallelograms but a parallelogram is not necessarily a rhombus.

13. A rhombus can never be split into two equilateral triangles.