# Exploring Angle Pair Relationships Parallel Lines and Transversals

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Resource Type
Common Core Standards
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PDF (Acrobat) Document File

1 MB|57 pages
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Materials: device with internet, google account
Prerequisite Skills: parallel lines, supplementary angles, congruent angles
Students learn how to distinguish the different angle pair relationships formed by a transversal cutting through a set of parallel lines. Different angle pairs in this lesson:
• Corresponding Angles
• Alternate Interior Angles
• Alternate Exterior Angles
• Same Side Interior Angles

This lesson lets students explore angles in motion to discover the relationship between a pair of angles created by a transversal and a set of parallel lines. The lesson starts by reviewing prerequisite skills and then having students review the names of the different types of angle pairs formed by a transversal line intersecting a set of parallel lines.

Next, students investigate these different angle pair relationships to see what happens when the angle measure changes. Students are asked questions to process this information. They continue to investigate what happens when the lines are not parallel.

Congruent angles and supplementary angles are discovered, which leads students to the fact that when parallel lines are cut by a transversal, then the corresponding angles have equal measure, the alternate interior angles have equal measure, the alternate exterior angles have equal measure, and the same side interior angles are supplementary. So, instead of just telling students these rules, they explore and build these rules on their own constructing the idea through a series of exercises.

The lesson ends with a student summary of the rules where they fill in the blank in sentence structures.

• If you would not like your students to have the answers to grade as they go, simply delete those slides before sharing the file with your students.
• 10 Practice slides follow the lesson
• Note: Lesson format is compatible with Google slides®

Pages: 45 slides + 8 pages investigation+4 teacher note pages
Total Pages
57 pages
Included
Teaching Duration
50 minutes
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