向量减法的动态几何演示

GeoGebra 命令及参数

1. Mirror(B, A) → B'_1
2. Dilate(A, If[0 < a ≤ 1, 1 - a, 0], C) → A'_1
3. Vector(A, A'_1) → w
4. Translate(B'_1, w) → F
5. Vector(A, B) → v
6. Vector(A, C) → u
7. Rotate(C, If[0 < a ≤ 1, ((a * 180))°, 180°], A) → C'
8. Dilate(A, If[1 < a < 2, 2 - a, 1], B) → A'
9. Vector(A, A') → b
10. Rotate(C, 180°, A) → C'_1
11. Translate(C'_1, b) → D
12. Translate(C'_1, v) → E
13. Vector(A, E) → f
14. Textfield() → InputBox1
15. Translate(B, w) → B'
16. Vector(A'_1, B') → c
17. Dilate(A, If[1 < a ≤ 2, 2 - a, 0], F) → A'_2
18. Vector(A, A'_2) → d
19. Vector(A, B) → e
20. Dilate(A, If[0 < g ≤ 1, 1 - g, 0], B) → A'_3
21. Vector(A, A'_3) → h
22. Translate(C, h) → C'_2
23. Vector(A, C) → j
24. Dilate(A, If[1 < g ≤ 2, 2 - g, 0], C'_2) → A'_4
25. Dilate(A, If[-1 < a ≤ 0, (-a), 0], B'_1) → A'_5
26. Vector(A, A'_5) → l
27. Vector(A'_1, F) → m
28. Vector(A, B'_1) → n
29. Mirror(C, A) → C'_3
30. Dilate(A, If[-1 < g ≤ 0, (-g), 0], C'_3) → A'_6
31. Vector(A, A'_6) → i
32. Vector(A, C'_3) → p
33. Translate(A'_6, h) → G
34. Vector(A'_3, G) → q
35. Dilate(A, If[1 < g ≤ 2, 2 - g, 0], G) → A'_7
36. Vector(A, A'_7) → k