Quadrilateral ABCD /B=70°, /A=54°,/D=105°,AB=6.2cm,AD=5.7cm
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a+b+c+d=360/quadrilateral
54+70+c+105=360
c=360-229
c=131
ab=CD
ad=bc
54+70+c+105=360
c=360-229
c=131
ab=CD
ad=bc
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