1MA0 Foundation June 2017 Paper 1 Q12
12 Here is an equilateral triangle.
(a) On the triangle, draw all the lines of symmetry. (2)
The diagram shows a square and its diagonals.
Diagram NOT accurately drawn
The square has sides of length 8 cm.
(b) Work out the area of the shaded triangle. (3)
| Answer | Mark | Notes |
|---|---|---|
| Correct lines | 2 | B2 exactly 3 correct lines of symmetry (B1 for 1 or 2 correct lines and no incorrect lines) |
| Answer | Mark | Notes |
|---|---|---|
| 16 | 3 | M1 for a method to find the area of the square e.g. \(8 \times 8\) (= 64) or the height of the shaded triangle e.g. \(8 \div 2\) (= 4) M1 for a complete method to find the area of the shaded triangle e.g. \(\text{``}64\text{''} \div 4\) or \(\frac{1}{2} \times 8 \times \text{``}4\text{''}\) A1 cao |