动态分析 - 描述性几何

GeoGebra 命令及参数

1. Vector((5.17, 0), (7, 3)) → q
2. Vector((1, 0), (1, 1)) → w
3. Point(v) → A
4. Point(u) → B_2
5. Segment(A, B_2) → c
6. Point(xAxis) → C
7. Segment(A, C) → d
8. Angle(C, A, B_2) → α
9. OrthogonalLine(D, u, xOyPlane) → e
10. Angle(c, e, xOyPlane) → β
11. Point(c) → E
12. Point(c) → F
13. Point(d) → G
14. Vector(H, I) → g
15. Point(d) → A'
16. Translate(B_2, g) → B'
17. Segment(A', B') → c'
18. Polygon(E, F, B', A') → poly1, e_1, f_1, b', a
19. Vector(B', E) → h
20. Vector(J, K) → i
21. Translate(B_2, i) → B
22. Vector(C, B) → j
23. Vector(B, B_2) → k
24. Vector(B, B') → l
25. Mirror(A, c) → A'_1
26. Dilate(j, 2, L) → j'
27. Rotate(j', -90*°, B) → j''
28. Dilate(j'', 0.25, L) → j'''
29. Point(j''') → N
30. Point(j') → M
31. Vector(O, P) → p
32. Translate(F, p) → F'
33. Vector(Q, R) → r
34. Translate(B, r) → S
35. Vector(T, U) → s
36. Translate(A, s) → A'_2
37. Vector(V, W) → u_1
38. Translate(S, u_1) → S'
39. Vector(B, A') → m
40. Vector(B_2, A') → n
41. Point(c) → Z
42. OrthogonalLine(Z, u) → t
43. Line(Z, u) → a_1
44. Rotate(a_1, 15*°, Z) → b_1
45. Angle(c, t) → δ
46. Vector(A_1, B_1) → v_1
47. Translate(Z, v_1) → Z'
48. Vector(Z, Z') → w_1
49. Vector(C_1, D_1) → c_1
50. Translate(Z, c_1) → Z'_1
51. Vector(Z, Z'_1) → d_1
52. Angle(c, a) → ε