平行四边形探索 by Sébastien Vieilhescazes

GeoGebra 命令及参数

1. Line(A, B) → a
2. Line(A, C) → b
3. Line(C, a) → c
4. Line(B, b) → d
5. Intersect(c, d) → D
6. OrthogonalLine(C, a) → e
7. OrthogonalLine(D, a) → f
8. Polygon(C, A, B, D) → poly1, c_1, a_1, b_1, d_1
9. Segment(A, D) → g
10. Segment(B, C) → h
11. Intersect(g, h) → E
12. Circle(E, C) → k
13. Circle(E, D) → p
14. OrthogonalLine(E, h) → i
15. OrthogonalLine(E, g) → j
16. Segment(A, E) → l
17. Segment(E, D) → m
18. Segment(E, B) → n
19. Segment(E, C) → q
20. Segment(A, E) → r
21. Segment(E, D) → s
22. Angle(C, D, B) → α
23. Angle(D, B, A) → β
24. Angle(B, A, C) → γ
25. Angle(A, C, D) → δ
26. Circle(A, ray) → t
27. Intersect(t, b, 2) → F
28. Intersect(t, a, 2) → G
29. Vector(A, F) → u
30. Translate(G, u) → G'
31. Polygon(A, G, G', F) → poly2, a_2, g_1, g', f_1
32. Vector(F, C) → v
33. Vector(G, B) → w
34. Translate(A, v) → A'
35. Translate(G, v) → G'_1
36. Translate(G', v) → G''
37. Translate(F, v) → F'
38. Polygon(A', G'_1, G'', F') → poly2', a', g'_1, g'', f'
39. Translate(A, w) → A'_1
40. Translate(G, w) → G'_2
41. Translate(G', w) → G''_1
42. Translate(F, w) → F'_1
43. Polygon(A'_1, G'_2, G''_1, F'_1) → poly2'_1, a'_1, g'_2, g''_1, f'_1
44. Translate(A', w) → A''
45. Translate(G'_1, w) → H
46. Translate(G'', w) → G'''
47. Translate(F', w) → F''
48. Polygon(A'', H, G''', F'') → poly2'', a'', h_1, g''', f''
49. Vector(G'_2, F') → u_1
50. Translate(H, u_1) → H'
51. Segment(C, A) → e_1
52. Segment(B, D) → i_1
53. OrthogonalLine(A, c_1) → l_1
54. Circle(B, D) → q_1