对称轴的绘制与演示 by bgrs_es
几何画板及绘图内容加载中,请稍等……
①本范例演示了如何绘制多边形的对称轴,并展示其对称性;②涉及的核心数学概念包括对称性、多边形、几何作图;③作图要点——从下方『构造摘要』提炼用到了哪些 GeoGebra 命令/对象:Polygon(多边形)、A, B, C, D(点)、poly1, poly2, poly3, poly4(多边形对象)、a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p(点);④适合的学段或用途——本范例适合高中阶段学生,用于学习和理解多边形的对称轴及其性质,是几何作图教学的有用工具。
GeoGebra 命令及参数
Polygon(A, B, C, D) → poly1, a, b, c, dPolygon(E, F, G, H) → poly2, e, f, g, hPolygon(I, J, K, L) → poly3, i, j, k, lPolygon(M, N, O, P, Q, R, S, T) → poly4, m, n, o, p, q, r, s, tPolygon(U, V, W, Z, A_1) → poly5, u, v, w, z_1, a_1Polygon(B_1, C_1, D_1, E_1, F_1, G_1, H_1, I_1, J_1, K_1) → poly6, b_1, k_1, c_1, d_1, e_1, f_1, g_1, h_1, i_1, j_1Polygon(L_1, M_1, N_1, O_1) → poly7, l_1, m_1, n_1, o_1Polygon(P_1, Q_1, R_1, S_1) → poly8, p_1, q_1, r_1, s_1Polygon(T_1, U_1, V_1, W_1, Z_1, A_2, B_2, C_2, D_2, E_2) → poly9, t_1, e_2, u_1, v_1, w_1, z_2, a_2, b_2, c_2, d_2Polygon(F_2, G_2, P_2, Q_2, H_2, I_2, J_2, K_2, L_2, M_2, N_2, O_2) → poly10, f_2, o_2, p_2, q_2, g_2, h_2, i_2, j_2, k_2, l_2, m_2, n_2Polygon(R_2, S_2, D_3, E_3, T_2, U_2, V_2, W_2, Z_2, A_3, B_3, C_3) → poly11, r_2, c_3, d_3, e_3, s_2, t_2, u_2, v_2, w_2, z_3, a_3, b_3