三角形与向量的动态演示

GeoGebra 命令及参数

1. Point(a_1) → A
2. Point(a_1) → C
3. Segment(A, C) → b
4. Rotate(C, α, A) → B'
5. Angle(C, A, B') → β
6. OrthogonalLine(C, b) → c_1
7. Ray(A, B') → d
8. Intersect(c_1, d) → B
9. Segment(A, B) → c
10. Segment(C, B) → a
11. Point(a_2) → A_1
12. Point(a_2) → C_1
13. Segment(A_1, C_1) → b_1
14. Rotate(C_1, α, A_1) → B'_1
15. Angle(C_1, A_1, B'_1) → β_1
16. OrthogonalLine(C_1, b_1) → c_2
17. Ray(A_1, B'_1) → d_1
18. Intersect(c_2, d_1) → B_1
19. Segment(A_1, B_1) → c_3
20. Segment(C_1, B_1) → a_3
21. Textfield(α) → inputBox1
22. Circle(A, C) → e
23. Intersect(e, c, 1) → D
24. OrthogonalLine(D, b) → f
25. Intersect(f, b) → E
26. Segment(D, E) → g
27. Segment(A, E) → h
28. Segment(A, D) → i
29. Vector(F, G) → u
30. Vector(F, H) → v
31. Vector(F, I) → w