螺旋形几何构造——直角三角形与多边形序列

GeoGebra 命令及参数

1. Polygon(A, B, 3) → poly1, f, g, h, C
2. OrthogonalLine(A, g) → i
3. Point(i) → D
4. Polygon(A, D, 3) → poly2, j, k, l, E
5. OrthogonalLine(A, k) → m
6. Point(m) → F
7. Polygon(A, F, 3) → poly3, n, p, q, G
8. OrthogonalLine(A, p) → r
9. Point(r) → H
10. Polygon(A, H, 3) → poly4, s, t, a, I
11. OrthogonalLine(A, t) → b
12. Intersect(b, yAxis) → J
13. Polygon(A, J, 3) → poly5, c, d, e, K
14. OrthogonalLine(A, d) → f_1
15. Point(f_1) → L
16. Polygon(A, L, 3) → poly6, g_1, h_1, i_1, M
17. OrthogonalLine(A, h_1) → j_1
18. Point(j_1) → N
19. Polygon(A, N, 3) → poly7, k_1, l_1, m_1, O
20. OrthogonalLine(A, l_1) → n_1
21. Point(n_1) → P
22. OrthogonalLine(A, l_1) → p_1
23. Point(l_1) → Q
24. OrthogonalLine(Q, l_1) → q_1
25. Polygon(A, P, 3) → poly8, r_1, s_1, t_1, R
26. OrthogonalLine(A, s_1) → a_1
27. Point(a_1) → S
28. Polygon(A, S, 3) → poly9, b_1, c_1, d_1, T
29. OrthogonalLine(A, c_1) → e_1
30. Point(e_1) → U
31. OrthogonalLine(A, c_1) → f_2
32. Polygon(A, U, 3) → poly10, g_2, h_2, i_2, V
33. OrthogonalLine(A, h_2) → j_2
34. Point(d_1) → W
35. OrthogonalLine(W, h_2) → k_2
36. Point(k_2) → Z
37. Polygon(A, Z, 3) → poly11, l_2, m_2, n_2, A_1