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Copy of Parallel Lines Cut by Tranversal

An interactive look at transversals and angles. NOTE: Corresponding angles are color coded. See questions below the diagram
1. Drag any of the points A, B, C, or D to make the lines appear parallel. What do you notice about the corresponding angles? 2. Deselect "Show all angles?" Explore the other special angles pairs, one pair at a time. What is the relationship between the various special angle pairs when lines are parallel?