三角形垂心演示 by Alexi

GeoGebra 命令及参数

1. Segment(A, B) → f
2. Segment(B, C) → g
3. Segment(A, C) → h
4. Midpoint(f) → D
5. Circle(D, B) → c
6. Segment(A_1, B_1) → f_3
7. Midpoint(f_3) → D_3
8. Circle(D_3, B_1) → c_3
9. Intersect(c_3, h, 1) → E
10. Segment(A_1, B_1) → f_1
11. Midpoint(f_1) → D_1
12. Circle(D_1, B_1) → c_1
13. Intersect(c_1, g, 1) → F
14. Segment(A_3, B_3) → f_4
15. Midpoint(f_4) → D_4
16. Circle(D_4, B_3) → c_4
17. Segment(A_4, B_4) → f_5
18. Midpoint(f_5) → D_5
19. Circle(D_5, B_4) → c_5
20. Intersect(c_4, h, 1) → H
21. Intersect(c_5, g, 1) → I
22. Point(h) → G
23. Circle(A, G) → d
24. Segment(A_5, C_1) → h_1
25. Point(h_1) → G_1
26. Circle(A_5, G_1) → d_1
27. Intersect(d, d_1, 1) → J
28. Segment(J, B) → i
29. Point(g) → K
30. Circle(B, K) → e
31. Segment(A_6, C_2) → h_2
32. Point(h_2) → G_2
33. Circle(A_6, G_2) → d_2
34. Intersect(d, d_2, 1) → L
35. Segment(L, B) → j
36. Segment(B_5, C_2) → g_1
37. Point(g_1) → K_1
38. Circle(B_5, K_1) → e_1
39. Intersect(e, e_1, 2) → M
40. Segment(M, A) → k
41. Segment(A, M) → l
42. Segment(L, B) → m
43. Intersect(d_2, j, 2) → N
44. Angle(A, C, B) → α