Question

please give answer step by step plz ​

Answer 1

angle 1 = 140°

angle 1 + angle 4 = 180°( linear pair)

140° + angle 4 = 180°

angle 4 = 180° - 140°

angle 4 = 80°

Here angle 2 + angle 3 = 180°

means angle 1 + angle 4 = angle 2 + angle 3

i.e. angle 2 + angle 3 = 180°

Also, angle 1 = angle 3 ( vertically opposite angles)

angle 4 = angle 2 ( vertically opposite angles)

so, angle 3 = 140°

angle 2 = 40°

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