20. Find the value of x in degrees.
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Value of x in degree is 30
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firstly the angle which is with hundred and the another angle which is linear pair of it will make 180 degrees so the angle will be of 80 degree so 80 degree + 70 degree + x which is equal to 180 degree (as as sum property of triangle
180-150 is equal to 30
x is 30 degree
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