Line AE is parallel to line FD. Line CB is the transversal. Use this applet to explore the relationships between interior angles. [b]Move point A change the orientation[/b] of the parallel lines. [b]Move point C to change the distance [/b]between the lines. Point B changes both orientation and distance between the lines.
What do you notice about... [b] Alternate Interior Angles [/b] [color=#1551b5]ABC[/color] and [color=#1551b5]BCD[/color]? [b]Alternate Interior Angles[/b] [color=#c51414]EBC[/color] and [color=#c51414]FCB[/color]? [b]Same Side Interior Angles [/b][color=#1551b5]ABC[/color] and [color=#c51414]FCB[/color]? [b]Same Side Interior Angles [/b][color=#c51414]EBC[/color] and [color=#1551b5]BCD[/color]?