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Solving Problems, SM-Bank 015

In the diagram below, find the value of \(x^{\circ}\), giving reasons for your answer.   (2 marks)
  

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\(45^{\circ}\)

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\(\text{Since cointerior angles sum to 180°:}\)

\(180^{\circ}\) \(=x+70+65\)  
\(x^{\circ}\) \(=180-135\)  
  \(=45^{\circ}\)