(a(i))[1]
State the order of rotational symmetry for the diagram.
(a(ii))[2]
On the diagram, draw every line of symmetry.
(b(i))[1]
On the grid, draw Diagram 4.
(b(ii)(a))[1]
Complete this statement. Diagram n has ____________________ grey columns.
(b(ii)(b))[2]
Find an expression, in terms of $n$, for the total number of columns in Diagram $n$.
(b(ii)(c))[1]
Find an expression, in terms of $n$, for the fraction of columns that are grey in Diagram $n$.
(b(iii)(a))[3]
Fill in the table.
(b(iii)(b))[2]
Write an expression, in terms of $n$, for the number of grey squares in Diagram $n$.
(b(iii)(c))[2]
Work out the number of white squares in Diagram 30.
(b(iii)(d))[2]
Work out the value of $k$.