Question

find the value of unknown angle ​

Answer 1

Solution :-

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We know that sum of all angles of quadrilateral => 360°

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So , X + 130 + 80 + 70 => 360°

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X = 360 - 280

X = 80 °

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Answer 2

Answer:

80°

Step-by-step explanation:

The explanation is in the above picture

Hope it helps you