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Review — Difficulty 3/10

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Trigonometry · Right-triangle trigonometry

Review skills for this standard. Write answers where shown.

Together with a parent

1. Similar triangles: sides 9, 10, and 11. Scale factor? ___ 2. If ΔABC ~ ΔDEF and AB/DE = 8, find BC/EF = ___ 3. Right triangle: opposite=9, hypotenuse=11. sin θ = ___

Written review

1. Similar triangles: sides 11, 12, and 13. Scale factor? ___ 2. If ΔABC ~ ΔDEF and AB/DE = 10, find BC/EF = ___ 3. Right triangle: opposite=11, hypotenuse=13. sin θ = ___ 4. Find missing side using tan 45° = ___ 5. Dilation scale factor 2.3. Image length? ___ 6. Explain why the triangles are similar.

_See printable PDF for diagram._

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Skills checklist

  • [ ] Proves or identifies similarity
  • [ ] Solves proportions from similar figures

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