Question

help me for this question​

Answer 1

AB is the transversal for BC and CD.

We know that the sum of two Co-interior angles on the same side of the transversal = 180°

Given,

<A = 4x

<B = 5x

According to the question,

<A + <B = 180°

4x + 5x = 180°

9x = 180°

x = 180°/9

x = 20°

<A = 4×20° = 80°

<B = 5×20° = 100°

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