This shape is drawn on a triangular dotty grid. Complete this shape so that it has rotational symmetry of order 3. [2]
(b)
This shape is drawn on a square dotty grid. Complete the shaded shape so that \(L\) is a line of symmetry.
You must shade the smallest possible number of squares. [2]
Mark scheme (a)
Scheme
Marks
Comments
Correctly completed shape:
a single line in correct position
a single line of correct length
a triangle on the correct side of the line
B2
B1 for a line in the correct position with either correct length or with a triangle on the correct side
NB Allow unshaded triangle
No line, no marks
Mark scheme (b)
Scheme
Marks
Comments
Four correct squares shaded
B2
B1 for a symmetrical shape with 4 correct squares and no more than 2 extra squares OR B1 for 3 or 4 correct squares and no more than 1 incorrect square OR B1 for 2 correct squares and no incorrect squares
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