向量投影：将一个向量投影到另一个向量上的可视化演示

GeoGebra 命令及参数

1. Vector(A, B) → v
2. Line(A, B) → f
3. Point(f) → C
4. Point(f) → D
5. Vector(A, E) → u
6. OrthogonalLine(E, f) → g
7. Intersect(f, g) → F
8. Vector(A, F) → w
9. Vector(F, E) → b
10. Angle(E, F, A) → α
11. Ray(A, D) → h
12. Ray(B, C) → i
13. Line(A, g) → j
14. Line(B, g) → k
15. Circle(A, 1 / 2) → d
16. Circle(B, 1 / 2) → e
17. Intersect(d, j, 1) → G
18. Intersect(e, k, 1) → H
19. Dilate(G, If[0 < c ≤ 1, 1 - c, 0], H) → G'
20. Dilate(A, If[0 < c ≤ 1, 1 - c, 0], F) → A'
21. Vector(A, A') → m
22. Segment(F, E) → n
23. Distance(A, E) → distanceAE
24. Distance(A, B) → distanceAB
25. Distance(G, G') → distanceGG'
26. Intersect(e, k, 1) → I
27. Intersect(e, k) → J, K
28. Intersect(d, j) → L, M
29. Dilate(M, If[0 < c ≤ 1, 1 - c, 0], K) → M'
30. Distance(M, K) → distanceMK
31. Angle(E, A, B) → β
32. Point(f) → N
33. Ray(F, N) → l
34. Distance(A, A') → distanceAA'
35. SurdText(p) → text3
36. Distance(O, P) → distanceOP
37. SurdText(xx) → text6
38. SurdText(yy) → text7