Intermediate November 2022 Unit 1 Q15
15. Triangle \(ABC\) is shown in the diagram below.
Using only a ruler and a pair of compasses, construct an accurate drawing of triangle \(ABC\).
Side \(AC\) has been drawn for you.
All construction lines and arcs must be shown. [3]
Diagram not drawn to scale
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 |
|---|---|---|
| OVERLAY Treat reversed angles at A and C MR-1. Correct construction arcs must be seen and angle drawn. If B3, penalise -1 if triangle not completed. | ||
| Correct construction of 60° at A | B1 | |
| Correct construction of angle 45° at C | B2 | Award B1 for one of the following:
|