4024/13 May/Jun 2026, Question 8: Angles in Parallel Lines
Cambridge O Level Mathematics 4024 · Paper 13 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Given PQ parallel to TS, with angle PQR 42° and angle RST 65° shown in the diagram, calculate the reflex angle QRS.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Draw a line through R parallel to PQ
- 2Alternate angles: angle QRS = 42° + 65° = 107°
- 3Reflex angle QRS = 360° − 107° = 253°
Answer253
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