四边形性质探索：从一般四边形到特殊四边形

GeoGebra 命令及参数

1. Point(Circle[A, 2]) → B
2. Polygon(A, B, C, D) → q1, a, b, c, d
3. Point(Circle[E, 4]) → F
4. Polygon(E, F, G, H) → q2, e, f, g, h
5. Segment(I, J) → i
6. Segment(I, K) → j
7. Line(J, j) → k
8. Point(k) → L
9. Segment(L, K) → l
10. Segment(J, L) → m
11. Intersect(i, j) → M
12. Polygon(M, J, L, K) → q3, m_1, j_1, l_1, k_1
13. Segment(N, P) → n
14. Segment(N, O) → p
15. Line(O, n) → q
16. Line(P, p) → r
17. Intersect(q, r) → Q
18. Segment(O, Q) → s
19. Segment(Q, P) → t
20. Polygon(N, O, Q, P) → q4, n_1, o, q_1, p_1
21. LineBisector(S, R) → f_1
22. Point(f_1) → T
23. Point(f_1) → U
24. Polygon(T, S, U, R) → q5, t_1, s_1, u, r_1
25. Circle(V, W) → c_1
26. Segment(V, W) → g_1
27. Point(c_1) → Z
28. Segment(V, Z) → h_1
29. Line(Z, g_1) → i_1
30. Line(W, h_1) → a_1
31. Intersect(i_1, a_1) → A_1
32. Segment(Z, A_1) → b_1
33. Segment(A_1, W) → d_1
34. Polygon(Z, A_1, W, V) → q6, z_1, e_1, w, v