Four angles are formed around a central point. The sizes of three of these angles are 147∘147^\circ147∘, 91∘91^\circ91∘, and 52∘52^\circ52∘. The size of the remaining angle is yyy.
Work out the value of yyy.
Give a reason for your answer.
106 exam-style questions on Edexcel GCSE Maths Angles. Each one has a worked solution and a mark scheme showing where the marks go.