O-LevelMathematicsGeometry4024/12 · Oct/Nov 2016 · Q32 Marks
In the diagram, five small squares are shaded. Shade one more small square, so that the diagram has exactly one line of symmetry.
- (a)In the diagram, five small squares are shaded. Shade one more small square, so that the diagram has exactly one line of symmetry.[1]
- (b)In the diagram, three small squares are shaded. Shade one more small square, so that the diagram has rotational symmetry of order 4.[1]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [1] (a) [Image of 5x5 grid with square (3,5) (row 3, col 5) shaded in addition to the original 5, creating vertical symmetry]
- [1] (b) [Image of 5x5 grid with square (4,3) (row 4, col 3) shaded in addition to the original 3, creating rotational symmetry of order 4]
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