梯形的性质探究 by solimaa6

GeoGebra 命令及参数

1. Line(H, I) → q
2. OrthogonalLine(H, q) → r
3. OrthogonalLine(I, q) → s
4. Point(q) → J
5. Circle(H, J) → t
6. Intersect(t, r, 2) → K
7. CircleArc(H, J, K) → c_1
8. Point(c_1) → L
9. Line(L, q) → a_1
10. Intersect(a_1, s) → M
11. Segment(L, M) → b_1
12. Point(b_1) → N
13. Segment(H, L) → d_1
14. Segment(L, N) → e_1
15. Segment(N, I) → f_1
16. Segment(H, I) → g_1
17. Angle(N, I, H) → ν
18. Angle(I, H, L) → ξ
19. Angle(H, L, N) → ο
20. Angle(L, N, I) → ρ
21. Distance(H, L) → distanceHL
22. Distance(L, N) → distanceLN
23. Distance(N, I) → distanceNI
24. Distance(I, H) → distanceIH
25. Slope(e_1) → m_2
26. Slope(g_1) → m_3
27. Segment(L, I) → h_1
28. Segment(N, H) → i_1
29. Intersect(h_1, i_1) → O
30. Angle(H, L, O) → υ
31. Angle(O, L, N) → ϕ
32. Angle(L, N, O) → χ
33. Angle(N, I, O) → ψ
34. Angle(O, N, I) → ω
35. Angle(O, I, H) → α_1
36. Angle(I, H, O) → β_1
37. Angle(O, H, L) → γ_1
38. Distance(L, O) → distanceLO
39. Distance(O, N) → distanceON
40. Distance(O, I) → distanceOI
41. Distance(O, H) → distanceOH
42. Distance(L, I) → distanceLI
43. Distance(N, H) → distanceNH
44. Angle(L, O, H) → δ_1
45. Angle(N, O, L) → ε_1
46. Slope(f_1) → m
47. Slope(d_1) → m_1
48. Midpoint(d_1) → A
49. Midpoint(f_1) → B
50. Segment(A, B) → f
51. Distance(A, B) → distanceAB
52. Slope(f) → m_4
53. Segment(L, I) → j
54. Segment(H, N) → k
55. Intersect(j, k) → C
56. Distance(L, C) → distanceLC
57. Midpoint(L, C) →
58. Distance(C, I) → distanceCI
59. Midpoint(C, I) →
60. Distance(H, C) → distanceHC
61. Midpoint(H, C) →
62. Distance(C, N) → distanceCN
63. Midpoint(C, N) →