三角函数比率演示 by MsPond

GeoGebra 命令及参数

1. Rotate(A, 90°, B) → C
2. Angle(A, B, C) → α
3. Segment(B, A) → b
4. Segment(B, C) → g
5. Point(g) → D
6. Segment(D, B) → h
7. Angle(B, D, A) → β
8. Segment(D, A) → c
9. Angle(D, A, B) → a
10. Rotate(A_1, 90°, B_1) → C_1
11. Angle(A_1, B_1, C_1) → α_1
12. Segment(B_1, A_1) → b_1
13. Segment(B_1, C_1) → g_1
14. Point(g_1) → D_1
15. Segment(D_1, B_1) → h_1
16. Angle(B_1, D_1, A_1) → β_1
17. Segment(D_1, A_1) → c_1
18. Angle(D_1, A_1, B_1) → a_1
19. Rotate(A_2, 90°, B_2) → C_2
20. Angle(A_2, B_2, C_2) → α_2
21. Segment(B_2, A_2) → b_2
22. Segment(B_2, C_2) → g_2
23. Point(g_2) → D_2
24. Segment(D_2, B_2) → h_2
25. Angle(B_2, D_2, A_2) → β_2
26. Segment(D_2, A_2) → c_2
27. Angle(D_2, A_2, B_2) → a_2
28. Rotate(A_3, 90°, B_3) → C_3
29. Angle(A_3, B_3, C_3) → α_3
30. Segment(B_3, A_3) → b_3
31. Segment(B_3, C_3) → g_3
32. Point(g_3) → D_3
33. Segment(D_3, B_3) → h_3
34. Angle(B_3, D_3, A_3) → β_3
35. Segment(D_3, A_3) → c_3
36. Angle(D_3, A_3, B_3) → a_3