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​Q12: Question – Paper 1 – June 2019
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​12) 
​AB and BC are perpendicular lines.
a) Find the value of x.
[2 marks]

RS and TU are parallel lines.
​PQ is a straight line.
An angle of size 125° is shown on the diagram.

b)
(i) Write down the letter of one other angle of size 125
Give a reason for your answer.
[2 marks]

​(ii) Explain why a + b + c = 235°
[1 mark]