Properties of Geometric Figures, SM-Bank 020

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

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\(26^{\circ}\)

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\(x^{\circ}+54^{\circ}\)	\(=80\ \ \text{(external angle = sum of interior opposite angles)} \)
\(x^{\circ}\)	\(=80-54\)
	\(=26^{\circ}\)