Intermediate November 2018 Unit 1 Q11
11. Two straight lines, AB and AC, are shown below.
The point P is
- equidistant from line AB and line AC,
- 6 cm from point B,
- more than 10 cm from point A.
Show clearly the position of point P. [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 |
|---|---|---|
| Allow ± 2° and ± 2mm | ||
| Angle BAC bisected OR Unique point P shown within tolerance of angle bisector | B1 | Accept correct construction or use of protractor. |
| Arc, radius 6 cm, centre B OR Unique point P shown 6 cm (± 2mm) from B | B1 | Of sufficient length to be identified. |
| Correct point P shown. | B1 | Allow FT from any previous B0 if equivalent decision required for identifying position of P. i.e. An arc, centre B, intersects a straight line drawn from A at two points, with only one of these points over 10 cm from A. A correct point P gains all 3 marks. |