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Introduction to Properties of Parallel Lines
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1. Discovery Activities
- Parallel Lines Intersected by a Transversal
- Angles and Parallel Lines Discovery #1
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Introduction to Properties of Parallel Lines
Pat Patterson, Aug 12, 2014

Table of Contents
- Discovery Activities
- Parallel Lines Intersected by a Transversal
- Angles and Parallel Lines Discovery #1
Parallel Lines Intersected by a Transversal
The lines a and b are parallel, cut by transversal c. Drag the blue points on c to move the transversal.
1. How does this affect the angles formed by the intersection of a and b with c?
2. Which angles are always congruent?
3. Which angles are always supplementary?


Angles and Parallel Lines Discovery #1
Drag the slider and the bright magenta colored point.
What does this suggest about angles formed by a transversal falling on two parallel lines?


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