Chapter 12: Q22. (page 696)
The drawing is a herring illusion, in which intersecting transversal make two parallel lines appear to be curves. Describe a way you can use a protector to verify that the two lines are parallel.
Short Answer
Measure the corresponding angles with respect to each transversal. For each transversal, if the corresponding angles are equal, then it can be said that two red colored lines are parallel..