长方体对角线探索

长方体对角线探索
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2021-11-20 10:53
①本范例演示长方体对角线的计算与性质;②涉及核心数学概念:面积、几何、勾股定理、直角三角形、三角形、外接圆、导数、整数、三角函数、分数;③作图要点:使用 GeoGebra 命令如 Textfield, If, PointIn, Circle, Point, Line, Rotate, Segment, Intersect, Angle, Sphere, Polygon, OrthogonalLine, Translate 等构建图形;④适合高中阶段学生学习和教师教学演示。

GeoGebra 命令及参数

  1. Textfield(a) → InputBox1
  2. Textfield(b) → InputBox2
  3. Textfield(c) → InputBox3
  4. Textfield(d) → InputBox4
  5. Textfield(f) → InputBox5
  6. Textfield(g) → InputBox6
  7. If(Length[Mode[l1]] ≟ 0, "No digits repeat!", "Repeated digits exist.") → text4
  8. Textfield(h) → InputBox7
  9. PointIn(Plane[(0, 0, 0), (1, 0, 0), (1, 1, 0)]) → D
  10. Circle(D, (10 * a) + b, zAxis) → e
  11. Point(e) → E
  12. Line(D, E) → i
  13. Rotate(D, ((-π)) / 2, E, Plane[(0, 0, 0), (1, 0, 0), (1, 1, 0)]) → D'
  14. Line(D', E) → j
  15. Segment(D, E) → k
  16. Circle(E, d, Line[E, E + (0, 0, 1)]) → p
  17. Intersect(j, p) → F, H
  18. Segment(E, H) → l
  19. Angle(H, E, D) → α
  20. Segment(D, H) → m
  21. Line(H, H + (0, 0, 1)) → n
  22. Sphere(H, c) → o
  23. Intersect(n, o) → I, J
  24. Segment(H, J) → q
  25. Segment(J, D) → r
  26. Polygon(D, E, H) → t1, h_1, d_1, e_1
  27. Polygon(D, H, J) → t2, j_1, d_2, h_2
  28. OrthogonalLine(J, Vector[J, D], Vector[J, H]) → s
  29. Line(H, J) → t
  30. Circle(J, sqrt((100 * f) + (10 * g) + h), s) → c_1
  31. Point(c_1) → K
  32. Segment(J, K) → f_1
  33. Line(E, E + (0, 0, 1)) → g_1
  34. Sphere(E, Radius[c_1]) → u
  35. Sphere(E, c) → v
  36. Intersect(g_1, v) → L, M
  37. Line(D, d_1) → i_1
  38. Sphere(D, d) → w
  39. Intersect(i_1, w) → N, O
  40. Translate(O, Vector[E, M]) → O'
  41. Translate(D, Vector[E, M]) → D'_{1}
  42. Polygon(D, O, O', D'_{1}) → q1, d_3, o_1, o', d'_{1}
  43. Polygon(D'_{1}, M, E, D) → q2, k_1, m_1, e_2, d_4
  44. Polygon(M, J, H, E) → q3, m_2, j_2, h_3, e_3
  45. Polygon(H, J, O', O) → q4, h_4, j_3, l_1, o_2
  46. Polygon(D'_{1}, M, J, O') → q5, n_1, m_3, j_4, p_1
  47. Segment(O', D'_{1}) → q_1
  48. Segment(D'_{1}, D) → r_1
  49. Segment(D, O) → s_1
  50. Segment(O, O') → t_1
  51. Segment(E, M) → a_1
  52. Segment(M, D'_{1}) → b_1
  53. Segment(M, J) → f_2
  54. Segment(J, O') → g_2
  55. Segment(H, O) → i_2
  56. Angle(J, H, D) → β

AI 绘图提示语参考

画一个长方体,标注其长宽高,计算并显示对角线长度,展示对角线与各面形成的三角形,并计算相关角度和面积,同时绘制对角线所在的球体和圆,最后将图形分解为多个多边形并旋转展示其空间关系。
以上提示语为根据原始绘图命令整理而来,仅供参考。