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饼图

饼图
几何画板及绘图内容加载中，请稍等……
2020-07-30 19:21
解析几何概率统计几何作图
这个范例演示了饼图的绘制方法。饼图是一种用于展示数据比例关系的统计图表。通过使用GeoGebra命令如Intersect、Point、Circle、Rotate等，可以构造出一个动态的饼图。该范例涉及的核心数学概念包括角度、圆和统计学。适合初中及以上学生学习数据可视化和统计分析。

GeoGebra 命令及参数

  1. Intersect(xAxis, yAxis) → A
  2. Point(xAxis) → B
  3. Circle(A, B) → h
  4. Rotate(B, (a * g°), A) → B'
  5. Angle(B, A, B') → α
  6. Rotate(B', (b * g°), A) → B''
  7. Angle(B', A, B'') → β
  8. Rotate(B'', (c * g°), A) → B'''
  9. Angle(B'', A, B''') → γ
  10. Rotate(B''', (d * g°), A) → C
  11. Angle(B''', A, C) → δ
  12. CircleSector(A, B, B') → k
  13. CircleSector(A, C, B) → p
  14. CircleSector(A, B', B'') → q
  15. CircleSector(A, B'', B''') → r
  16. CircleSector(A, B''', C) → s
  17. TableText({{A1, A2, A3, A4, A5, A6}, {C1, C2, C3, C4, C5, C6}}, "|_cccccc") → text1
  18. TableText({{A7, B7}, {A8, B8}, {A9, B9}, {A10, B10}, {A11, B11}, {A12, B12}}, "|_cc") → text7
  19. Textfield(w) → InputBox1
  20. TableText({{If[w > 4, ("" * B1), ""], If[w > 5, ("" * C1), ""], If[w > 6, ("" * D1), ""]}, {If[w > 7, ("" * B2), ""], If[w > 8, ("" * C2), ""], If[w > 9, ("" * D2), ""]}, {If[w > 10, ("" * B3), ""], If[w > 11, ("" * C3), ""], If[w > 12, ("" * D3), ""]}, {If[w > 13, ("" * B4), ""], If[w > 14, ("" * C4), ""], If[w > 15, ("" * D4), ""]}, {If[w > 16, ("" * B5), ""], If[w > 17, ("" * C5), ""], If[w > 18, ("" * D5), ""]}, {If[w > 19, ("" * B6), ""], If[w > 20, ("" * C6), ""], If[w > 21, ("" * D6), ""]}}, "|_ccc") → text2
  21. Textfield(a) → InputBox2
  22. Textfield(b) → InputBox3
  23. Textfield(c) → InputBox4
  24. Textfield(d) → InputBox5
  25. Textfield(e) → InputBox6