Definition:Transversal (Geometry)/Alternate Interior Angles

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Definition

Alternate Interior Angles.png


Alternate interior angles are the angles which are between two lines cut by a transversal, on opposite sides and different lines.

In the above figure, the pairs of alternate interior angles with respect to the transversal $EF$ are:

$\angle AHJ$ and $\angle DJH$
$\angle CJH$ and $\angle BHJ$


Also see


Sources