find the value of x
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the value of x is 99 ok
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ABCD is a quadrilateral
angleA=35degree(vertically opp. angle)
angleD=9090degree(given)
angleC=136degree(given)
angleb=x
A+B+C+D=360degree(angle sum property)
35+x+136+90=360
261+x =360
x =360-261
x=99degree
x =angle B =99degree
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