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Question
In the given figure, if x = 2y, find x and y
Sum
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Solution
x° + y° = 180° .............(straight angle)
But x = 2y ........(given)
∴ 2y + y = 180°
⇒ 3y = 180°
⇒ y =`(180°)/3` = 60°
Hence y = 60°
and x = 2y = 2 × 60° = 120°
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Introduction to Lines and Angles
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