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This Special Right Triangle 30-60-90: Lesson instructional video also includes:
It is special—given one length, you can find the other two. A segment of a basic geometry playlist provides the ratio of the lengths of sides of a 30-60 right triangle. The presentation shows how to use the ratio to find side lengths given any one length.
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Concepts
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Instructional Ideas
- Use an equilateral triangle with its altitude to prove the ratios are those given in the video
Classroom Considerations
- Individuals should know how to simplify numerical expressions with radicals
- Expects students understand the parts of a right triangle
- This video is hosted on YouTube
Pros
- Contains a link to other CK-12 30-60-90 resources
- Includes worked examples
Cons
- None