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相似变换演示 by Terry Lee Lindenmuth

相似变换演示 by Terry Lee Lindenmuth
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2016-01-10 04:04
变换几何作图滑块动画
本范例用于探索和演示相似变换。它涉及几何学中的相似变换概念。通过使用GeoGebra命令如Polygon, Dilate, Segment, Distance, Midpoint等，可以构造出相似变换的图形。适合初中及以上学生或教师使用。

GeoGebra 命令及参数

  1. Polygon(A, B, C, D, E) → poly1, a, b, c, d, e
  2. Dilate(A, DilationFactor, Center) → A'
  3. Dilate(B, DilationFactor, Center) → B'
  4. Dilate(C, DilationFactor, Center) → C'
  5. Dilate(D, DilationFactor, Center) → D'
  6. Dilate(E, DilationFactor, Center) → E'
  7. Polygon(A', B', C', D', E') → poly1', a', b', c', d', e'
  8. Segment(E, Center) → g
  9. Segment(Center, E') → h
  10. Distance(E, Center) → distanceEG
  11. Midpoint(E, Center) →
  12. Distance(E', Center) → distanceE'G
  13. Midpoint(E', Center) →
  14. Distance(Center, E) → distanceCenterE
  15. Midpoint(Center, E) →
  16. Distance(Center, E') → distanceCenterE'
  17. Midpoint(Center, E') →