Solve Q11..................
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missing angle of quadrilateral = 180-70= 110
( linear pair property)
80+56+110+3x-6= 360 ( angle sum property)
246+ 3x-6 = 360
240+ 3x. = 360
3x. = 360-240
x. = 120/3= 40
( linear pair property)
80+56+110+3x-6= 360 ( angle sum property)
246+ 3x-6 = 360
240+ 3x. = 360
3x. = 360-240
x. = 120/3= 40
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