find the value of x and y
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50° + 30° + a = 180°
a = 180° - 80°
a = 100°
x + 100° = 180°
x = 180° - 100°
x = 80°
x + 45° + b = 180°
80° + 45° + b = 180°
b = 180° - 125°
b = 55°
y + b + 50° = 180
y + 55° + 50° = 180°
y = 180° - 110°
y = 70°
Thus, x = 80° and y = 70° Ans.
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