正方体截面练习

GeoGebra 命令及参数

1. Circle(K_1, L) → c
2. PointIn(c) → P
3. Sequence(Mat * Element[cube, k], k, 1, 8) → cube'
4. Element(Element[AE, 3], 1) → droite_1
5. Sequence(O + (Element[cube', k, 1, 1], Element[cube', k, 2, 1]), k, 1, 8) → listepoints
6. Element(listepoints, 3) → C
7. Element(AB, 3, 1) → avant_1
8. Element(AC, 3, 1) → dessus_1
9. Element(listepoints, 4) → D
10. Element(listepoints, 8) → H
11. Element(listepoints, 7) → G
12. Polygon(D, H, G, C) → dessus, s_{DHdessus}, s_{HGdessus}, s_{GCdessus}, s_{CDdessus}
13. Element(listepoints, 1) → A
14. Element(listepoints, 5) → E
15. Polygon(D, A, E, H) → arrière, s_{DAarrière}, s_{EAarrière}, s_{EHarrière}, s_{HDarrière}
16. Element(listepoints, 6) → F
17. Polygon(H, G, F, E) → droite, s_{HGdroite}, s_{GFdroite}, s_{EFdroite}, s_{EHdroite}
18. Element(listepoints, 2) → B
19. Polygon(D, C, B, A) → gauche, s_{CDgauche}, s_{BCgauche}, s_{BAgauche}, s_{ADgauche}
20. Polygon(F, B, C, G) → avant, s_{FBav}, s_{BCavant}, s_{CGavant}, s_{GFavant}
21. Polygon(B, F, E, A) → dessous, s_{BFdessous}, s_{FEdessous}, s_{EAdessous}, s_{ABdessous}
22. Segment(B, A) → p_{AB}
23. Segment(D, C) → p_{DC}
24. Segment(H, G) → p_{HG}
25. Segment(G, F) → p_{GF}
26. Segment(A, D) → p_{AD}
27. Segment(E, H) → p_{HE}
28. Segment(F, E) → p_{FE}
29. Segment(A, E) → p_{EA}
30. Segment(F, B) → p_{FB}
31. Segment(H, D) → p_{HD}
32. Segment(E, H) → p_{EH}
33. Segment(C, G) → p_{CG}
34. Segment(C, B) → p_{CB3}
35. Segment(A, E) → p_{AE}
36. Segment(C, B) → p_{CB}
37. Corner(1) → coin1'
38. Point(s_{BAgauche}) → I
39. Point(s_{EAarrière}) → J
40. Point(s_{CDgauche}) → K
41. Segment(I, K) → a
42. Segment(I, J) → b
43. Line(K, b) → d
44. Intersect(d, s_{HDarrière}) → O_1
45. Segment(J, O_1) → e
46. Intersect(d, p_{HG}) → Q
47. Segment(J, Q) → f
48. Polygon(I, J, Q, K) → poly1, j, m, q, n
49. Polygon(I, J, O_1, K) → poly2, j_1, m_1, o, n_1
50. Polygon(I, E, Q, K) → poly3, i, e_1, q_1, k
51. Polygon(B, A, D, C) → poly4, b_1, a_1, d_1, c_1