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Question
In the given diagram, ABC is a straight line. If x = 53°, find y.
Sum
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Solution
From the figure,
∠ABD + ∠DBC = 180° (Linear pair of angles)
⇒ x + y = 180°
⇒ 53°+ y = 180° (∵ x = 53”)
⇒ y = 180° – 53°
⇒ y = 127°
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