开口中间百分比建模：分数与比例的几何化

GeoGebra 命令及参数

1. Polygon(A0, B, 4) → poly0, f, g, h, i, A, C
2. Polygon(A3, H, 4) → poly3, j, k, l, m, E, G
3. Polygon(A7, P, 4) → poly7, n, p, q, r, I, K
4. Polygon(A1, D, 4) → poly1, s, t, a, b, M, O
5. Polygon(A6, N, 4) → poly6, c, d, e, f_1, Q, S
6. Polygon(A2, H2, 4) → poly2, k_1, l_1, m_1, n_1, W, Z
7. Polygon(A8, A8 + (2, 0), 4) → poly8, g_1, h_1, i_1, j_1, U, V
8. Polygon(A9, T, 4) → poly9, p_1, q_1, r_1, s_1, A_1, B_1
9. Polygon(A4, J, 4) → poly4, t_1, a_1, b_1, c_1, C_1, D_1
10. Polygon(A5, L, 4) → poly5, d_1, e_1, f_2, g_2, E_1, F_1
11. Polygon(K_1, L_1, 4) → poly10, l_2, m_2, n_2, p_2, M_1, N_1
12. Polygon(O_1, P_1, 4) → poly12, q_2, r_2, s_2, t_2, Q_1, R_1
13. Polygon(S_1, T_1, 4) → poly13, a_2, b_2, c_2, d_2, U_1, V_1
14. Polygon(C_2, D_2, 4) → poly15, i_3, j_3, k_3, l_3, E_2, F_2
15. Polygon(G_2, H_2, 4) → poly16, m_3, n_3, p_3, q_3, I_2, J_2
16. Polygon(G_{3}, H_{3}, 4) → poly17, m_{4}, n_{4}, p_{4}, q_{4}, I_{3}, J_{3}
17. Polygon(C_{3}, D_{3}, 4) → poly14, i_{4}, j_{4}, k_{4}, l_{4}, E_{3}, F_{3}
18. FractionText(u) → text4
19. Point(xAxis) → Q_2
20. Polygon(A_2, Q_2, R_2, P_2) → q1, h_2, i_2, j_2, k_2
21. Segment(A_2, B_2) → e_2
22. Segment(B_2, O_2) → f_3
23. Segment(O_2, P_2) → g_3
24. Segment(P_2, A_2) → h_3
25. Segment(R_2, Q_2) → r_3
26. Point(yAxis) → S_2
27. Segment(S_2, T_2) → s_3
28. Segment(T_2, U_2) → t_3
29. Point(yAxis) → V_2
30. Segment(U_2, V_2) → a_3
31. Segment(V_2, S_2) → b_3
32. Polygon(S_2, Z_2, A_3, V_2) → q2, c_3, z_2, d_3, v_2
33. Segment(A_3, Z_2) → e_3