圆周率π的近似值

GeoGebra 命令及参数

1. Circle(S_2, T_2) → q_2
2. Sequence(Rotate[T_2, (i * 360 / Sides)°, S_2], i, 1, Sides) → list1
3. Polygon(list1) → poly2, , ,
4. Sequence(Line[S_2, Element[list1, i]], i, 1, Sides) → list2
5. Sequence(Tangent[Element[list1, i], q_2], i, 1, Sides) → list3
6. Intersect(Element[list3, 1], Element[list3, 2]) → C_2
7. Intersect(Element[list3, 2], Element[list3, 3]) → D_2
8. Polygon(C_2, D_2, Sides) → poly4, n_2, q_3, E_1, F_1, G_1, H_1, I_1, J_1, K_1, L_1, M_1, N_1, r_3, O_1, P_1, Q_1, R_1, S_1, T_1, U_1, V_1, W_1, s_3, t_3, a, b, c, d, e, f, p_2, g, h, i, j, k, l, m, p, q, r, i_3, s, a_1, b_1, c_1, d_1, e_1, f_1, g_1, h_1, i_1, j_3, j_1, k_1, l_1, m_1, n_1, p_1, q_1, r_1, s_1, t_1, k_3, a_2, b_2, c_2, d_2, e_2, f_2, g_2, h_2, i_2, j_2, l_3, k_2, F_2, R_2, U_2, V_2, W_2, Z_2, A_3, B_3, C_3, m_3, D_3, E_3, A, B, C, D, E, F, G, H, n_3, I, J, K, L, M, N, O, P, Q, R, p_3, S, T, U, V, W, Z, A_1, B_1, C_1, D_1
9. Segment(S_2, T_2) → t