[Figure for 4(a) shows a 4x4 grid with 4 squares shaded]

1. (a)Shade one more small square so the diagram has one line of symmetry.[1]
2. (b)Here is a regular polygon. [Figure for 4(b) shows a regular hexagon with shaded parts] Complete the description of the rotational symmetry of this polygon. The polygon has rotational symmetry of order ______.[1]

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