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Point O is the centre of the circle. What is the value of x? (Assume that lines that appear to be tangent are tangent)

Point O is the centre of the circle What is the value of x Assume that lines that appear to be tangent are tangent class=

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HomertheGenius
    Sum if the inner angles of the quadrilateral:
    150° + 90° + 90° + x = 360°
    330° + x = 360°
    x = 360° - 330°
    x = 30 ° 

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