Foundation June 2023 Unit 1 Q10
10. ABCD is a rectangle.
A is the point (3, 4), B is the point (–5, 4), C is the point (–5, –2) and D is the point (3, –2).
What is the perimeter of ABCD?
You may use the centimetre-squared grid below to help you. [5]
Perimeter of ABCD = …………………… cm
| Scheme | Marks | Comments |
|---|---|---|
| Correct plots of 3 or 4 of the points A, B, C, D AND no incorrect plots. | B3 | A correct and unambiguous length (8 cm) and width (6 cm) implies the first B3B1 B2 for either
|
| Length = 8 (cm) AND Width = 6 (cm) | B1 | The length (8 cm) AND width (6 cm) may be seen in either order. A correct and unambiguous length (8 cm) and width (6 cm) implies the first B3, if not previously awarded. FT from their plots only if a single rectangle has been formed or if three points are plotted and they form a right angle when joined. |
| (Perimeter = 2 × 8 + 2 × 6 or equivalent =) 28 (cm) | B1 | FT 2בtheir 8’ + 2בtheir 6’, provided previous B1 awarded. OR FT 2בtheir stated 8’ + 2בtheir stated 6’, provided a rectangle seen or implied |
Alternative
Alternative method (if no plots shown)
| Scheme | Marks | Comments |
|---|---|---|
| (Length =) 3 – (– 5) OR 3 + 5 | M1 | |
| = 8 (cm) | A1 | |
| (Width =) 4 – (– 2) OR 4 +2 | M1 | |
| = 6 (cm) | A1 | |
| (Perimeter = 2 × 8 + 2 × 6 or equivalent =) 28 (cm) | B1 | FT 2 × ‘their 8’ + 2 × ‘their 6’, provided at least one M1) previously awarded |
The scheme prints this alternative in italics.