is aIn a parallelogram ABCD, A=xăwhiD.B = (3x + 20)". Find x and

1.	is aIn a parallelogram ABCD, A=xăwhiD.B = (3x + 20)". Find x and LC and
Answer» adjacent angles of \|\|gm are supplementary /_A+/_B=180°x°+(3x+20)°=180°x°+3x°+20°=180°4x°+20°=180°4x°=180°-20°4x°=160°x=160°/4°x=40 Therefore,/_A=x° =40°/_B=(3x+20)° =(3×40+20)° =(120+20)° =140° thanks opposite angles are congruent /_A=/_C=40°/_B=/_D=140°

is aIn a parallelogram ABCD, A=xăwhiD.B = (3x + 20)". Find x and LC and

Answer»

adjacent angles of ||gm are supplementary

/_A+/_B=180°x°+(3x+20)°=180°x°+3x°+20°=180°4x°+20°=180°4x°=180°-20°4x°=160°x=160°/4°x=40

Therefore,/_A=x° =40°/_B=(3x+20)° =(3×40+20)° =(120+20)° =140°

thanks

opposite angles are congruent

/_A=/_C=40°/_B=/_D=140°