Shape and Space 1
3 marks · NormalComplete the table. For each figure, write down the number of sides and the number of lines of symmetry.
| Shape | Number of sides | Lines of symmetry |
|---|---|---|
| Equilateral triangle | ||
| Regular octagon | ||
| Rectangle |
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Also accept: 3,3 and 8,8 and 4,2 (see below)
Common mistakes: rectangle with 4 lines (ignore diagonals; only 2 for rectangle)
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Correctly completes row for equilateral triangle: 3 sides, 3 lines.
B2 · 1 mark · Correctly completes row for regular octagon: 8 sides, 8 lines.
B3 · 1 mark · Correctly completes row for rectangle: 4 sides, 2 lines (not diagonals).
Worked solution
| Shape | Number of sides | Lines of symmetry |
|---|---|---|
| Equilateral triangle | 3 | 3 |
| Regular octagon | 8 | 8 |
| Rectangle | 4 | 2 |