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This HL Triangle Congruence: Lesson instructional video also includes:
Use the right congruence statement. The video introduces the Hypotenuse-Leg Theorem to prove two right triangles are congruent. Part of a geometry playlist shows that it does not matter which leg to use when proving congruence.
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Concepts
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Instructional Ideas
- Lead a discussion on why though SSA does not work for triangles but HL does for right triangles
- Determine whether there may be other short cuts for right triangles
Classroom Considerations
- Pupils should be able to recognize the parts of right triangles
- This video is hosted on YouTube
Pros
- Contains a link to more resources using HL
- Provides worked examples
Cons
- None