Question

answer this question in the figure​

Answer 1

given AB||CD

x = 30° (Alternate angle)

y + 30 + 80 = 180 (Co interior angles are supplementary)

y = 70°

z + y - 30 + x = 180 (Co interior angles are supplementary)

z + 70 - 30 + 30 = 180

z = 110°

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