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This Criterion for Perpendicularity lesson plan also includes:
- Geometry Module 4: Teacher Materials
- Geometry Module 4: Student Materials
- Geometry Module 4: Copy Ready Materials
- Geometry Module 4, Topic B Overview (PDF)
- Geometry Module 4, Topic B Overview (Doc)
- Geometry Module 4, Topic B, Lesson 5: Teacher Version (Doc)
- Geometry Module 4, Topic B, Lesson 5: Student Version (PDF)
- Geometry Module 4, Topic B, Lesson 5: Student Version (Doc)
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The Pythagorean Theorem is a geometry pupil's best friend! Learners explain the equation a1b1 + a2b2 = 0 for perpendicular segments using the Pythagorean Theorem. They are able to identify perpendicular segments using their endpoints and make a connection to the slope of the segments being opposite reciprocals.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Have pairs create a segment with given endpoints for their partners to determine if they are perpendicular
- Include lengths that are radical expressions
Classroom Considerations
- Review calculations related to the Pythagorean Theorem
- The fifth lesson in a 15-part series
Pros
- Lesson builds from simpler questions to more complex situations
- Includes all necessary handouts, answer keys, and instructions
Cons
- None