识别多边形：顶点与边的关联

GeoGebra 命令及参数

1. Polygon(D, E, 4) → poly2, d, e, f, g, F, G
2. Polygon(A, B, 8) → poly1, a, H, I, J, K, L, b, c, h, i, j, k, l, C
3. Polygon(M, N, 5) → poly3, m, n, p, q, r, O, P, Q
4. Polygon(R, S, 6) → poly4, s, W, t, a_1, b_1, c_1, d_1, T, U, V
5. Polygon(Z, A_1, 7) → poly5, e_1, D_1, E_1, F_1, f_1, g_1, h_1, i_1, j_1, k_1, B_1, C_1
6. Polygon(G_1, H_1, 10) → poly6, l_1, b_2, I_1, J_1, K_1, L_1, M_1, N_1, O_1, P_1, m_1, n_1, p_1, q_1, r_1, s_1, t_1, a_2
7. Polygon(Q_1, R_1, 3) → poly7, c_2, d_2, e_2, S_1