Answer :

**(i)** From the above-given figure, it is clear that,

∠1 = ∠5

This is because a is parallel to b also ∠1 and ∠5 are corresponding angles

Hence,

In these angles are equal due to corresponding angles property

**(ii)** From the above-given figure, it is clear that,

∠4 = ∠6

This is because of the alternate interior angles property

**(iii)** We have,

From the above-given figure, it is clear that,

∠4 + ∠5 = 180^{o}

Because we know that, the interior angles on the same side of the transversal are supplementary

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