Measure the two exterior angles on the same side of the transversal.
Once we do it, we need to come up with a name for the pair of the angles. Let's start with the drawing.
Now, we can measure the angles.
We can tell that the measure of ∠ 2 is 120. After measuring ∠ 1, we get that m ∠ 1 =60.
Now, let's recall the names and descriptions for other pairs of angles that we learned so far.
Alternate Interior Angles are angles that lie between the pair of lines on opposite sides of the transversal.
Consecutive Interior Angles are angles that lie between the pair of lines on the same side of the transversal.
Alternate Exterior Angles are angles that lie outside the two lines on opposite sides of the transversal.
Our angles are exterior angles on the same side of the transversal. Based on the pattern for naming the other pairs of angles, we can conclude that they should be called Consecutive Exterior Angles.
