St Nicholas 2025 P6 Maths Prelim — Paper 1 Booklet B Q25 Solution

Paper 1 Booklet B · Q25 · 2 marks · Angles

Question

In the figure, AOB is a straight line. $\angle AOC = 201^\circ$ and $\angle COD = 264^\circ$. Find $\angle AOD$.

Answer: $105^\circ$

The non-reflex $\angle COD = 360^\circ - 264^\circ = 96^\circ$. The reflex $\angle AOC = 201^\circ$, so $\angle AOD = 201^\circ - 96^\circ = 105^\circ$.

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