4024/11 Oct/Nov 2023, Question 6: Angles in Parallel Lines
Cambridge O Level Mathematics 4024 · Paper 11 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
A transversal crosses two parallel lines; one angle is 110°, with x° and y° at the other intersection. Find x and y.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Part (a) · 1 mark
Using parallel line angle facts with the 110° angle, work out the value of x.
- 1x and 110° are co-interior angles between the parallel lines
- 2x = 180 − 110 = 70
Answer70
Part (b) · 1 mark
Using angles on a straight line, work out the value of y.
- 1Angles on a straight line: y = 180 − 70 = 110
Answer110
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