二次函数与抛物线的几何关系

GeoGebra 命令及参数

1. Point(list1) → A
2. Polygon(D, A, 4) → poly1, a, b, c, d, I, J
3. OrthogonalLine(M, xAxis) → e
4. Intersect(e, xAxis) → N
5. Circle(N, 1) → f
6. Intersect(f, xAxis, 1) → O
7. Circle(M, 1) → g
8. OrthogonalLine(O, xAxis) → h
9. Intersect(g, h, 1) → P
10. Polygon(N, O, P, M) → poly2, n, o, p, m
11. Polygon(Q, R, S, T, U, V) → poly3, q, r, s, t, u, v
12. Polygon(W, Z, A_1, B_1) → poly4, w, z_1, a_1, b_1
13. Polygon(C_1, D_1, E_1, F_1, G_1, H_1) → poly5, c_1, d_1, e_1, f_1, g_1, h_1
14. Polygon(I_1, J_1, K_1, L_1, M_1, N_1) → poly6, i_1, j_1, k_1, l_1, m_1, n_1
15. Intersect(xAxis, yAxis) → O_1
16. Point(xAxis) → P_1
17. Polygon(O_1, P_1, 4) → poly7, i, j, k, l, Q_1, R_1
18. Polygon(Q_1, S_1, T_1, U_1) → poly8, q_1, s_1, t_1, u_1
19. Polygon(T_1, V_1, W_1, Z_1) → poly9, t_2, v_1, w_1, z_2
20. Polygon(W_1, A_2, B_2, C_2) → poly10, w_2, a_2, b_2, c_2