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This Special Lines in Triangles (part 2) lesson plan also includes:
- Congruence, Proof, and Constructions - Module Overview (PDF)
- Congruence, Proof, and Constructions - Module Overview (Doc)
- Special Lines in Triangles (part 2) (Doc)
- Special Lines in Triangles (part 2) (PDF)
- Special Lines in Triangles (part 2) (Doc)
- Assessment
- Answer Key
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Medians, midsegments, altitudes, oh my! Pupils study the properties of the median of a triangle, initially examining a proof utilizing midsegments to determine the length ratio of a median. They then use the information to find missing lengths.
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CCSS:
Designed
Concepts
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Instructional Ideas
- Investigate the centroid as the center of gravity of a triangle; once scholars construct the medians of a triangle, they cut it out and use the centroid to attempt to balance their triangles
- Use a graphic organizer to record the information about the different special segments of a triangle
Classroom Considerations
- A review of ratios may be required
Pros
- Lesson highlights key vocabulary and uses the words throughout instruction
- The progression of examples is sound
Cons
- None