投掷飞镖于圆盘 by David Wees

投掷飞镖于圆盘 by David Wees
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2019-05-04 01:08
本范例通过模拟投掷飞镖于圆盘靶心,演示概率与圆的相关知识。使用圆、线、垂线、交点、多边形等GeoGebra命令,学生可以直观理解飞镖落在圆内或圆外的概率。适合初中及以上学生学习概率统计与圆的相关概念。

GeoGebra 命令及参数

  1. Circle(A, B) → c
  2. Line(A, B) → f
  3. OrthogonalLine(B, f) → g
  4. OrthogonalLine(A, f) → h
  5. Intersect(c, h, 2) → C
  6. Intersect(c, h, 1) → D
  7. Line(C, f) → i
  8. Line(D, f) → j
  9. Intersect(g, i) → E
  10. Intersect(g, j) → F
  11. Intersect(c, f, 2) → G
  12. OrthogonalLine(G, f) → k
  13. Intersect(i, k) → H
  14. Intersect(j, k) → I
  15. Polygon(H, E, F, I) → q1, h_1, e, f_1, i_1
  16. Text("Landed inside the circle: 4") → inside
  17. Text("Landed outside the circle: 1") → outside
  18. Text("Cumulative ratio of darts inside to darts thrown: 0.8") → ratio