菱形变换演示

GeoGebra 命令及参数

1. Circle(B, A) → f
2. Circle(A, B) → c
3. Line(A, B) → b
4. Intersect(c, b, 2) → C
5. CircleArc(A, B, C) → d
6. Point(d) → D
7. Segment(D, B) → s
8. Circle(D, A) → e
9. Intersect(e, f, 2) → E
10. Segment(A, E) → n
11. Intersect(n, s) → L
12. Segment(A, B) → a
13. Segment(A, D) → g
14. Segment(D, E) → h
15. Segment(E, B) → i
16. Min(g, h) → j
17. Dilate(B, If[0 < l ≤ 1, 1 - l, 0], A) → B'
18. Segment(B, B') → m
19. Angle(E, B, A) → α
20. Angle(D, E, B) → β
21. Rotate(B, If[1 < l ≤ 2, ((-(l - 1)) * α), α], B) → B'_1
22. Rotate(B', If[1 < l ≤ 2, ((-(l - 1)) * α), (-α)], B) → B''
23. Segment(B'_1, B'') → m'
24. Rotate(B'_1, If[2 < l ≤ 3, ((-(l - 2)) * β), (-β)], E) → J
25. Rotate(B'', If[2 < l ≤ 3, ((-(l - 2)) * β), (-β)], E) → B'''
26. Segment(J, B''') → m''
27. Rotate(J, If[3 < l ≤ 4, ((-(l - 3)) * α), (-α)], D) → J'
28. Rotate(B''', If[3 < l ≤ 4, ((-(l - 3)) * α), (-α)], D) → K
29. Segment(J', K) → m'''
30. Circle(B, (0.2 * j)) → k
31. Circle(E, (0.2 * j)) → p
32. Intersect(p, m'', 1) → F
33. Intersect(p, m', 1) → G
34. Intersect(k, m', 1) → H
35. Intersect(k, m, 1) → I
36. CircleSector(B, H, I) → q
37. CircleSector(E, F, G) → r
38. Polygon(A, B, E, D) → poly1, a_1, b_1, e_1, d_1
39. Dilate(B, If[5 < l ≤ 6, 6 - l, 0], D) → B'_2
40. Vector(B, B'_2) → u
41. Translate(q, u) → q'
42. Rotate(q', If[6 < l ≤ 7, ((l - 6) * π), 3.141592653589793], D) → q''
43. Dilate(E, If[7 < l ≤ 8, 8 - l, 0], A) → E'
44. Vector(E, E') → v
45. Translate(r, v) → r'
46. Rotate(r', If[8 < l ≤ 9, ((-(l - 8)) * π), -3.141592653589793], A) → r''
47. Dilate(D, If[9 < l ≤ 10, 10 - l, 0], L) → D'
48. Vector(D, D') → w
49. Min(n / 2, s / 2) → o
50. Circle(L, (0.2 * o)) → t
51. Intersect(t, s, 2) → M
52. Intersect(t, n, 2) → N
53. CircleSector(L, M, N) → c_1
54. Segment(D, D') → f_1
55. Dilate(L, If[10 < l ≤ 11, 11 - l, 0], B) → L'
56. Circle(D, (0.2 * j)) → h_1
57. Intersect(k, s) → P,
58. Intersect(s, f_1) → Q
59. Intersect(h_1, s, 1) → O
60. Circle(A, (0.2 * j)) → k_1
61. Intersect(k_1, m, 1) → R
62. Intersect(k_1, n, 1) → S
63. Intersect(k_1, m''', 1) → T
64. Intersect(h_1, m'', 1) → U
65. CircleSector(D, O, U) → q_1
66. Dilate(A, If[11 < l ≤ 12, 12 - l, 0], L) → A'
67. Segment(A, A') → i_1
68. Dilate(L, If[12 < l ≤ 13, 13 - l, 0], E) → L'_1
69. Segment(L, L'_1) → j_1
70. Intersect(p, m'', 1) → V
71. Intersect(p, n, 1) → W
72. CircleSector(A, S, T) → s_1
73. CircleSector(B, P, I) → p_1
74. Intersect(p, m', 1) → Z
75. CircleSector(E, W, Z) → r_1
76. Segment(L, L') → g_1
77. Rotate(L, If[13 < l ≤ 14, ((-(l - 13)) * π), -3.141592653589793], L) → L'_2
78. Rotate(L', If[13 < l ≤ 14, ((-(l - 13)) * π), -3.141592653589793], L) → L''
79. Segment(L'_2, L'') → l_1
80. Rotate(L, If[14 < l ≤ 15, ((-(l - 14)) * π), 3.141592653589793], L) → L'_3
81. Rotate(L'_1, If[14 < l ≤ 15, ((-(l - 14)) * π), 3.141592653589793], L) → A_1
82. Segment(L'_3, A_1) → m_1
83. Rotate(q_1, If[15 < l ≤ 16, ((-(l - 15)) * α / 2), ((-α)) / 2], D) → t_1
84. Rotate(p_1, If[15 < l ≤ 16, ((-(l - 15)) * α / 2), ((-α)) / 2], B) → c_2
85. Rotate(s_1, If[16 < l ≤ 17, ((-(l - 16)) * β / 2), ((-β)) / 2], A) → d_2
86. Rotate(r_1, If[16 < l ≤ 17, ((-(l - 16)) * β / 2), ((-β)) / 2], E) → e_2
87. Rotate(c_1, If[17 < l ≤ 18, ((l - 17) * π / 2), 1.5707963267948966], L) → f_2