In a parallelogram square abcd, angle a=x degree,angle b =3x+20 find x, angle c and angle d
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We know that in parallelogram opposite sides are equal,
i. e. ab=ac
x(3x+20) = ac
3x^2+20x=ac
i. e. ab=ac
x(3x+20) = ac
3x^2+20x=ac
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