Numeracy Intermediate November 2017 Unit 1 Q7
7. The diagram below shows a sketch of the existing gas pipes that run to and from Tŷ Gwyn.
It also shows a proposed 180 m gas pipe which is to be laid to provide gas to Cae Nia.
The proposed pipe bisects the angle formed by the existing pipes at Tŷ Gwyn.
Diagram not drawn to scale
Complete the scale drawing below to show the proposed pipe.
- You must use a pair of compasses to construct the angle bisector.
- Use a scale of 1 cm to represent 20 metres. [3]
On screen this diagram may not be shown at actual size. To measure it, use the question paper (PDF) printed at 100%.
| Scheme | Marks | Comments |
|---|---|---|
| A line from Ty Gwyn of 9cm ± 2mm or an unambiguous point within tolerance (indication of 9cm ± 2mm) | B1 | |
| Showing arcs for bisection of the angle Correct bisection of the angle ± 2°, with the line shown | M1 A1 | May be outside tolerance |