动态演示两个正方形与共点线

GeoGebra 命令及参数

1. Line(A, B) → j
2. Point(j) → G
3. Point(j) → F
4. Polygon(F, G, 4) → poly2, k, l, m, n, H, I
5. Line(A, H) → p
6. Point(j) → E
7. Polygon(A, E, 4) → poly1, f, g, h, i, C, D
8. Line(D, G) → q
9. Intersect(p, q) → J
10. Line(I, E) → r
11. Line(C, F) → s
12. Segment(G, H) → t
13. Segment(H, I) → a
14. Segment(I, F) → b
15. Segment(E, C) → c
16. Segment(C, D) → d
17. Segment(D, A) → e
18. Dilate(A, If[0 < o ≤ 1, 1 - o, 0], H) → A'
19. Segment(A, A') → f_1
20. Dilate(D, If[1 < o ≤ 2, 2 - o, 0], J) → D'
21. Segment(D, D') → g_1
22. Dilate(J, If[2 < o ≤ 3, 3 - o, 0], G) → J'
23. Segment(J, J') → h_1
24. Dilate(I, If[3 < o ≤ 4, 4 - o, 0], J) → I'
25. Segment(I, I') → i_1
26. Dilate(J, If[4 < o ≤ 5, 5 - o, 0], E) → J'_1
27. Segment(J, J'_1) → j_1
28. Intersect(q, p) → K
29. Dilate(C, If[5 < o ≤ 6, 6 - o, 0], J) → C'
30. Segment(C, C') → k_1
31. Dilate(J, If[6 < o ≤ 7, 7 - o, 0], F) → J'_2
32. Segment(J, J'_2) → l_1
33. Segment(A, E) → m_1
34. Segment(F, G) → n_1