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The angles of a cyclic quadrilateral ABC...

The angles of a cyclic quadrilateral ABCD are `angleA=(6x+10)^(@), angleB=(5x)^(@), angle C =(x+y)^(@)` and `angle D = (3y-10)^(@)`.

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The correct Answer is:
`angleA , angleB , angleC` and `angleD` are `130^(@) , 100^(@) , 50^(@)` and `80^(@)` respectively .
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