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St Nicholas 2025 P6 Maths Prelim — Paper 1 Booklet A Q13 Solution
Question
In the figure, ADEG is a parallelogram and FHJ is a triangle. GJ is a straight line. AG is parallel to BF. Find $\angle m$.
- 1. $120^\circ$
- 2. $123^\circ$
- 3. $126^\circ$
- 4. $127^\circ$
Answer: 1
Worked solution
- $\angle m$ is the exterior angle of triangle $FHJ$ at $C$, which equals the sum of the two opposite interior angles: $\angle m = 66^\circ + 54^\circ = 120^\circ$.
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