Parallel Lines Intersected by a Transversal

[b]The lines a and b are parallel, cut by transversal c. Drag the blue points on c to move the transversal. [/b][br] 1. How does this affect the angles formed by the intersection of a and b with c? [br] 2. Which angles are always congruent? [br] 3. Which angles are always supplementary?

Angles and Parallel Lines Discovery #1

[b]Drag the slider and the bright [color=#FF000FF]magenta[/color] colored point.[/b][br]What does this suggest about angles formed by a transversal falling on two parallel lines?

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