均值定理动态演示（无文字）

GeoGebra 命令及参数

1. Line(A, B) → g
2. Slope(g) → m
3. Intersect(n, h, 1) → C
4. Intersect(i, j) → D
5. Tangent(D, f) → k
6. Intersect(f, k) → E
7. Circle(A, d) → e
8. Intersect(e, l, 2) → F
9. Intersect(g, p) → G
10. Intersect(g, q) → H
11. Intersect(g, r) → I
12. Dilate(A, If[0 < o ≤ 1, 1 - o, 0], B) → A'
13. Segment(A, A') → f_1
14. Intersect(k, s) → J
15. Intersect(k, t) → K
16. Dilate(G, If[1 < o ≤ 2, 2 - o, 0], F) → G'
17. Segment(G, G') → g_1
18. Dilate(F, If[2 < o ≤ 3, 3 - o, 0], A) → F'
19. Segment(F, F') → h_1
20. Polygon(A, G, F) → poly1, f_2, a_1, g_2
21. Angle(G, F, A) → α
22. Dilate(E, If[4 < o ≤ 5, 5 - o, 0], J) → E'
23. Dilate(E, If[4 < o ≤ 5, 5 - o, 0], K) → E'_1
24. Segment(E, E'_1) → i_1
25. Segment(E, E') → j_1
26. Intersect(k, q) → L
27. Intersect(k, r) → M
28. Ray(K, M) → k_1
29. Ray(J, L) → l_1
30. Ray(B, I) → m_1
31. Ray(A, H) → n_1
32. Dilate(A, If[5 < o ≤ 6, 6 - o, 0], E) → A'_1
33. Vector(A, A'_1) → u
34. Translate(A, u) → A'_2
35. Translate(G, u) → G'_1
36. Translate(F, u) → F'_1
37. Polygon(A'_2, G'_1, F'_1) → poly1', f'_1, a'_2, g'_1
38. Translate(F, u) → F'_2
39. Translate(F', u) → F''
40. Segment(F'_2, F'') → p_1
41. Translate(G, u) → G'_2
42. Translate(G', u) → G''
43. Segment(G'_2, G'') → q_1
44. Angle(G'_2, F'_2, A'_2) → β
45. Segment(A'_2, G'_2) → r_1
46. Textfield(f) → InputBox1