等腰三角形与两个全等线段的关系

GeoGebra 命令及参数

1. Rotate(B, (a * π / 180), A) → B'
2. Angle(B, A, B') → α
3. Ray(A, B') → f
4. Segment(A, B) → g
5. Rotate(A, (-((a * π / 180))), B) → A'
6. Angle(A', B, A) → β
7. Ray(B, A') → h
8. Intersect(f, h) → C
9. Segment(A, C) → i
10. Segment(B, C) → j
11. Circle(B, 1) → c
12. Ray(A, B) → k
13. Intersect(c, k, 2) → D
14. Ray(B, D) → l
15. Circle(C, 1) → d
16. Ray(A, C) → m
17. Intersect(d, m, 2) → F
18. Ray(C, F) → n
19. Circle(B, 1) → p
20. Ray(C, B) → q
21. Intersect(p, q, 2) → H
22. Ray(B, H) → r
23. Point(n) → E
24. Circle(B, Distance[A, E]) → e
25. Intersect(e, r, 1) → G
26. Segment(E, G) → s
27. Intersect(l, s) → I
28. Distance(E, I) → distanceEI
29. Distance(I, G) → distanceIG
30. Polygon(A, B, C) → poly1, c_1, a_1, b
31. Polygon(B, I, E, C) → poly2, b_1, i_1, e_1, c_2
32. Polygon(B, I, G) → poly3, g_1, b_2, i_2
33. Min(i, g) → o
34. Circle(A, (0.35 * o)) → t
35. Intersect(t, i, 1) → J
36. Intersect(t, g) → K,
37. Rotate(K, If[0 < u ≤ 1, (u * α), α], A) → K'
38. CircleSector(A, K, K') → d_1
39. CircleSector(A, K, J) → f_1
40. Dilate(A, If[2 < u ≤ 3, 3 - u, 0], B) → A'_1
41. Vector(A, A'_1) → v
42. Translate(f_1, v) → h_1
43. Rotate(h_1, If[3 < u ≤ 4, ((u - 3) * (π - α)), π - α], B) → k_1
44. Dilate(E, If[4 < u ≤ 5, 5 - u, 0], I) → E'
45. Segment(E, E') → j_1
46. Rotate(E, If[5 < u ≤ 6, ((u - 5) * π), π], I) → E'_1
47. Rotate(E', If[5 < u ≤ 6, ((u - 5) * π), π], I) → E''
48. Segment(E'_1, E'') → l_1
49. Line(A, E) → m_1
50. Line(E'_1, m_1) → n_1
51. Point(n_1) → L
52. Dilate(A, If[7 < u ≤ 8, 8 - u, 0], E) → A'_2
53. Segment(A, A'_2) → p_1
54. Angle(B, E'_1, L) → γ
55. Dilate(E, If[8 < u ≤ 9, 9 - u, 0], E'_1) → E'_2
56. Vector(E, E'_2) → w
57. Translate(A, w) → A'_3
58. Translate(A'_2, w) → M
59. Segment(A'_3, M) → q_1
60. Rotate(A'_3, If[9 < u ≤ 10, ((-(u - 9)) * γ), (-γ)], E'_1) → N
61. Rotate(M, If[9 < u ≤ 10, ((-(u - 9)) * γ), (-γ)], E'_1) → M'
62. Segment(N, M') → r_1