平行四边形、矩形与正方形的几何性质与作图演示

GeoGebra 命令及参数

1. Point(Circle[A, a]) → B
2. Segment(A, B) → AB
3. Point(Circle[A, b]) → Dpomocna
4. Segment(A, Dpomocna) → b'pomocni
5. Rotate(Dpomocna, α, A) → D
6. Angle(Dpomocna, A, D) → α_1
7. Segment(A, D) → AD_1
8. Line(D, AB) → la
9. Line(B, AD_1) → lb
10. Intersect(la, lb) → C
11. Line(A, B) → lAB
12. OrthogonalLine(D, lAB) → n_a
13. Intersect(n_a, lAB) → E
14. Segment(D, E) → h_a
15. Polygon(A, B, C, D) → Paralelogram, a_0, b_0, c_0, d_0
16. Polygon(A_2, B_2, C_2, D_2) → Pravougaonik, a_2, b_2, c_2, d_2
17. Angle(B_2, A_2, D_2) → αP
18. Polygon(A_3, B_3, C_3, D_3) → Kvadrat, a_3, b_3, c_3, d_3
19. Polygon(A_4, B_4, C_4, D_4) → Romb, a_4, b_4, c_4, d_4
20. Angle(B_3, A_3, D_3) → αK
21. Angle(B_4, A_4, D_4) → αR
22. Segment(D_4, Er_1) → h
23. Segment(A, C) → AC
24. Segment(B, D) → BD
25. Intersect(AC, BD) → O
26. Segment(B_2, D_2) → dp
27. Segment(A_2, C_2) → dp_1
28. Intersect(dp, dp_1) → O_1
29. Segment(D_3, B_3) → dk
30. Segment(A_3, C_3) → dk_1
31. Segment(A_4, C_4) → dr1
32. Segment(B_4, D_4) → dr2
33. Intersect(dr2, dr1) → O_3
34. Intersect(dk_1, dk) → O_2
35. Circle(O_1, A_2) → k_p
36. Circle(O_3, h / 2) → k_r
37. Segment(O_1, B_2) → r_p
38. Intersect(k_r, a_4) → Er_2,
39. Segment(O_3, Er_2) → r_r
40. Circle(O_2, dk / 2) → k_o
41. Circle(O_2, a / 2) → k_u
42. Segment(O_2, B_3) → r_o
43. Intersect(k_u, a_3) → Ek,
44. Segment(O_2, Ek) → r_u
45. OrthogonalLine(D, lb) → n_b
46. Intersect(lb, n_b) → F
47. Segment(D, F) → h_b
48. Point(lAB) → A_1
49. Point(la) → D_1
50. Polygon(A_1, B_1, C_1, D_1) → P, a_1, b_1, c_1, d_1
51. Segment(D_1, E_0) → ha_0
52. Angle(D, C, B) → γ
53. Angle(C, B, A) → β
54. Angle(A, D, C) → δ
55. Angle(B_4, O_3, C_4) → αRd
56. Segment(O_3, C_4) → dr1p
57. Segment(B_4, O_3) → dr2p
58. Angle(B_4, A_4, O_3) → αR_1
59. Angle(O_3, A_4, D_4) → αR_2