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Step-by-step explanation:
50° + 60° = x (this is because exterior angle is equal to sum of exterior angles)
x = 110°
x + y = 180° (this is because x and y are linear pair of angles)
110° + y = 180°
y = 70°
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interior angles of triangle =180°
so,50°+60°+y=180°
110°+y=180°
y=180°-110°
y=70°
sum of two opposite interior angles is = exterior angle
50°+60°=x
110°= x
y=70°
x=110°
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