Parallel lines seem so right for each other. It's too bad they'll never, ever meet. Learners use tracing paper to discover relationships among angles formed by two parallel lines cut by a transversal. They apply this information to find angle measures given diagrams and selected measurements.

Concepts

parallel lines, parallel lines with a transversal, corresponding angles, alternate interior angles

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Additional Tags

math

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Instructional Ideas

• Create a graphic organizer sorting the different types of angles associated with parallel lines cut by a transversal

Classroom Considerations

• Activity requires materials, such as tracing paper, straightedge, and scissors
• Although the lesson is intended for high school, it can easily be adapted for the middle school classroom

Pros

• Provides clear directions for the activity
• Teacher resource gives possible questions to use for think-pair-share discussions

Cons

• Not enough examples and practice problems
• Does not include any student materials