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Investigate how similar and congruent figures compare. Learners understand congruent figures have congruent sides and angles, but similar figures only have congruent angles — their sides are proportional. After learning the relationships, pupils find missing measures.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Have your classes practice congruence, similarity, and proportionality statements before finding missing sides or angles
Classroom Considerations
- Expects an understanding of solving proportions
- Does not include examples for practice problems #15-16; supplement if appropriate for your classes
Pros
- Teaching congruence and similarity together highlights the similar notation
- Emphasizes vocabulary with definitions and examples
Cons
- None
Common Core
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