Question

Find the angle measure x in the following figure​

Answer 1

Answer:

value of x is 140 degree

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Answer 2

Given:-

3 angels of a quadrilateral are 70° , 60° and 90°

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To Find:-

4th angle which is denoted as 'x' here

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Solution:-

As we know that the sum of interior angles of a quadrilateral = 360°

➻ x + 70° + 60° + 90° = 360°

➻ x + 130° + 90° = 360°

➻ x + 220° =360°

➻ x = 360 - 220° (by transposition)

➻ x = 140°

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Verification:-

➻ 70° + 60° + 90° + 140°

➻ 70° + 60° + 90° + 140° = 360°

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Hence the value of x is 140°