find the value of x if one of the is 20
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50 degree
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sum of two angles of a triangle is equal to opposite exterior angle
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50 ..............
it is perfect answer
it is perfect answer
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angle acb=180-70=110(linear pair)
angle abc=x+110+20=180(a.s.p)
x=180-130=50
angle abc=x+110+20=180(a.s.p)
x=180-130=50
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