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Question -

In the figure, AOC is a line, find x.



Answer -

In the figure,
∠AOB + ∠BOC = 180° (Linear pair)
⇒ 70° + 2x = 180°
⇒ 2x = 180° – 70°
⇒ 2x = 110°⇒x == 55°
∴ x = 55°

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