Intermediate June 2018 Unit 1 Q16
16. Calculate the size of angle \(x\) in the diagram below. [3]
Diagram not drawn to scale
| Scheme | Marks | Comments |
|---|---|---|
| (ADC =) 109(°) | B1 | Answers may be written on the diagram. Allow for sight of 109(°). |
| x = 180 −26 – 109 | M1 | FT ‘their 109°’ (may be clearly indicated on the diagram) provided ≠ 71 and ≠ 26. |
| = 45(°) | A1 | An answer of 45(°) gains all 3 marks. |