SSS 相似定理动态探索

GeoGebra 命令及参数

1. Circle(A, a) → d
2. Intersect(d, e) → B_1, B
3. Circle(B, b) → f
4. Segment(A, B) → g
5. Circle(A, c) → k_1
6. Intersect(k_1, f) → C, G, ,
7. Segment(B, C) → h
8. Segment(C, A) → i
9. Polygon(A, B, C) → poly1, f_1, a_1, c_1
10. Point(Circle[D, (k * i)]) → F
11. Segment(D, F) → n
12. Circle(D, (k * g)) → p
13. Circle(F, (k * h)) → q
14. Intersect(p, q, 2) → E
15. Segment(D, E) → r
16. Segment(F, E) → s
17. Circle(A, 2) → t
18. Circle(B, 2) → e_1
19. Circle(D, 1.5) → d_1
20. Circle(E, 1.5) → g_1
21. Intersect(t, g, 1) → H
22. Intersect(t, i, 1) → I
23. Intersect(e_1, h, 1) → J
24. Intersect(e_1, g, 1) → K
25. Intersect(g_1, r, 1) → L
26. Intersect(g_1, s, 1) → M
27. Intersect(d_1, r, 1) → N
28. Intersect(d_1, n, 1) → O
29. CircleSector(D, N, O) → h_1
30. CircleSector(E, M, L) → p_1
31. Dilate(E, If[0 < o ≤ 1, 1 - o, 0], B) → D'
32. Vector(E, D') → u
33. Dilate(D, If[1 < o ≤ 2, 2 - o, 0], A) → D'_1
34. Vector(D, D'_1) → v
35. Line(E, h) → b_1
36. Intersect(g_1, b_1) → P, Q
37. Angle(M, E, Q) → α
38. Translate(p_1, u) → q_1
39. CircleArc(E, M, L) → s_1
40. Translate(h_1, v) → t_1
41. Line(D, i) → i_1
42. Intersect(d_1, i_1) → R, S
43. Angle(O, D, R) → γ
44. CircleArc(D, N, O) → d_2
45. Rotate(q_1, If[0 < o ≤ 1, (o * α), α], D') → e_2
46. Rotate(t_1, If[1 < o ≤ 2, ((o - 1) * γ), γ], D'_1) → r_1