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This Secant Angle Theorem, Exterior Case lesson plan also includes:
- Geometry Module 5: Teacher Materials
- Geometry Module 5: Student Materials
- Geometry Module 5: Copy Ready Materials
- Geometry Module 5, Topic C Overview
- Geometry Module 5, Topic C, Lesson 15: Teacher Version (Doc)
- Geometry Module 5, Topic C, Lesson 15: Student Version (PDF)
- Geometry Module 5, Topic C, Lesson 15: Student Version (Doc)
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It doesn't matter whether secant lines intersect inside or outside the circle, right? Scholars extend concepts from the previous lesson to investigate angles created by secant lines that intersect at a point exterior to the circle. They then extend this new concept to when one or both of the lines are tangent rather than secant lines.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Use geometry software to show the concept highlighted in the Example section
Classroom Considerations
- Learners need protractors to complete the lesson
- Lesson assumes understanding of the case where secants intersect in the interior of the circle
Pros
- Closing exercise includes a table for learners to fill out regarding all theorems associated with the Inscribed Angle Theorem
- Problem set includes exercises in which pupils must use given information to determine angle measures
Cons
- None