Question

4. Find x, y and z in the figure.
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Answer 1

Answer:

angle Y = 30 degree  [ Vertically Opposite Angle ]

Angle Z +  100 degree = 180 degree [ linear pair ]

angle Z = 80 degree

angle Y +  angle Z + angle X = 180

30 + 80 + angle X = 180

angle X = 180 - 110

angle X = 70 degree