Video Transcript
Work out the value of đť‘Ą in the
figure.
First of all, let’s think about the
type of lines we’re seeing in the figure. We have two parallel lines that are
cut by a transversal, which makes the 61-degree angle and the đť‘Ą-angle alternate
interior angles. And when two parallel lines are cut
by a transversal, alternate interior angles are congruent. This means both of these angles are
equal in measure and đť‘Ą must be equal to 61.
