[i]line a || line b[/i][br]Line c is a transversal. Drag the blue points on [i]line c[/i] to move the transversal. [br][br]Note: Do not allow the blue points to fall inside the parallel lines or the angles will disappear!
Which angle pairs are always congruent? Use some of the vocabulary that we learned in Lesson 3.1. [br]
What do you notice about the relationship between the consecutive interior angle pairs? Use good vocabulary.
Does the same relationship exist among the consecutive exterior angles? Explain.