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Question
Find the angle measure x in the given Figure
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Solution
From the figure, it can be concluded that,
90º + a = 180º (Linear pair)
a = 180º − 90º = 90º
Sum of the measures of all interior angles of a quadrilateral is 360º. Therefore, in the given quadrilateral,
60° + 70° + x + 90° = 360°
220° + x = 360°
x = 140°
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