Alternate interior angles are on the _______ side of the transversal.

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Solution

Consider, $m$ and $n$ are the straight lines and transversal $l$ intersects both the lines $m$ and $n$ .
Therefore, the angle $a$ and $b$ are alternate angles because of their position, that is, in the opposite side of the transversal and they are both lying on inside of a region covered by line $m$ and $n$ .
So, they are alternate interior angles.
Hence, we can say that alternate interior angles are on the opposite sides of the transversal.

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