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Step-by-step explanation:
106°+48°+x=180°
150° + x = 180
x = 180-150
x=30( angle ABD)
30 + 48 + X = 180
78 + x = 180
180-78=x
102°= x
Triangle ABD
106 + 30 + x = 180
136 - 180 = x
44° = x
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