维纳斯标志的几何构造
几何画板及绘图内容加载中,请稍等……
①这个范例演示了如何通过几何构造创建维纳斯标志的图形;②涉及的核心数学概念包括角度、反射、等边三角形、直角三角形、条件概率和勾股定理;③作图要点——从下方『构造摘要』提炼用到了LineBisector(角平分线)、Vector(向量)、OrthogonalVector(正交向量)、Line(直线)、OrthogonalLine(垂直线)、Intersect(交点)、Mirror(镜像)、Midpoint(中点)、Polygon(多边形)、CircleArc(圆弧)、Segment(线段)等GeoGebra命令/对象;④适合高中数学教学或几何作图爱好者学习。
GeoGebra 命令及参数
LineBisector(A, B) → mVector(A, B) → uOrthogonalVector(u) → vLineBisector(A_1, A) → lLine(A, B) → sOrthogonalLine(D, s) → iOrthogonalLine(A, s) → bOrthogonalLine(A_1, b) → rOrthogonalLine(F, b) → fIntersect(m, f) → MMirror(f, l) → f'Intersect(i, f') → EOrthogonalLine(K, r) → hMidpoint(K, G) → OLine(O, R) → tLine(I, t) → aLine(V, a) → cIntersect(c, i) → C_1Line(M, c) → dLine(Q, d) → g_1Line(Z, g_1) → h_1Intersect(i, h_1) → B_1OrthogonalLine(B_1, b) → i_1LineBisector(B_1, O_1) → n_2Intersect(n_2, i) → S_1LineBisector(S_1, C_1) → j_5Intersect(n_2, j_5) → Z_2OrthogonalLine(B, u, xOyPlane) → gMirror(i, m) → i'Intersect(g, r) → CMirror(f, l) → f'_1Mirror(F, l) → F'Intersect(m, f') → SPolygon(A_1, C, B, A) → c4, a_1, c_3, b_2, a_2Intersect(i', f') → WOrthogonalLine(G, f'_1) → kOrthogonalLine(H, f'_1) → jOrthogonalLine(N, r) → pOrthogonalLine(J, f'_1) → qOrthogonalLine(T, f'_1) → nLine(T, t) → eLine(L, a) → f_1Intersect(n, d) → D_1Intersect(g_1, n) → E_1Intersect(p, e) → F_1Intersect(h, f') → G_1Intersect(h, f_1) → H_1Intersect(j, a) → I_1Intersect(j, f_1) → J_1Intersect(k, f_1) → K_1Intersect(j, c) → L_1Intersect(k, c) → N_1Polygon(I, I_1, H_1, L, J_1, K_1, N_1, L_1, M_1, C_1, B_1, O_1) → polígono1, i_2, o_1, q_1, l_2, j_1, k_1, l_1, n_1, m_1, p_1, c_1, b_1OrthogonalLine(F_1, i') → r_1Polygon(Q_1, Q, F_1, P_1, M, D_1, E_1, L_1, I_1, T, O, R) → polígono2, s_1, r_2, h_2, j_2, q_2, m_2, d_1, t_1, f_2, g_2, t_2, oLineBisector(L, H_1) → k_2Intersect(k_2, i) → R_1CircleArc(R_1, H_1, L) → c_2LineBisector(E_1, L_1) → p_2Intersect(p_2, h) → T_1CircleArc(T_1, E_1, L_1) → s_2LineBisector(T, I_1) → f_3Intersect(f_3, i) → U_1CircleArc(U_1, I_1, T) → d_3LineBisector(P_1, F_1) → g_3Intersect(p, g_3) → V_1CircleArc(V_1, F_1, P_1) → e_3LineBisector(Q, Q_1) → h_3Intersect(h_3, i_1) → W_1CircleArc(W_1, Q_1, Q) → k_3Intersect(q, h_1) → Z_1Intersect(q, c) → A_2Polygon(Z_1, Z, V, A_2) → c1, z_1, z_2, v_1, i_3Segment(T, I_1) → j_3Segment(L, H_1) → l_3Segment(B_1, O_1) → m_3Segment(Q, Q_1) → n_3Segment(E_1, L_1) → p_3Mirror(Z_1, m) → B_2Mirror(Z, m) → Z'Mirror(V, m) → V'Mirror(A_2, m) → C_2Polygon(B_2, Z', V', C_2) → c1', q_3, z', v', r_3Mirror(c_2, m) → s_3CircleArc(Z_2, B_1, O_1) → d_2Mirror(d_2, m) → t_3Mirror(d_3, m) → c_4Mirror(e_3, m) → d_4Mirror(k_3, m) → e_4Mirror(s_2, m) → f_4Mirror(I, m) → I'Mirror(I_1, m) → D_2Mirror(J_1, m) → E_2Mirror(K_1, m) → F_2Mirror(N_1, m) → G_2Mirror(L_1, m) → H_2Mirror(M_1, m) → I_2Mirror(C_1, m) → J_2Mirror(B_1, m) → K_2Mirror(O_1, m) → L_2Mirror(H_1, m) → M_2Mirror(L, m) → L'Polygon(I', D_2, M_2, L', E_2, F_2, G_2, H_2, I_2, J_2, K_2, L_2) → polígono1', b_3, p_4, q_4, l', g_4, h_4, i_4, j_4, k_4, l_4, m_4, n_4Mirror(Q_1, m) → N_2Mirror(Q, m) → Q'Mirror(M, m) → M'Mirror(D_1, m) → O_2Mirror(E_1, m) → P_2Mirror(L_1, m) → Q_2Mirror(I_1, m) → R_2Mirror(T, m) → T'Mirror(O, m) → O'Mirror(R, m) → R'Mirror(F_1, m) → S_2Mirror(P_1, m) → T_2Polygon(N_2, Q', S_2, T_2, M', O_2, P_2, Q_2, R_2, T', O', R') → polígono2', r_4, r', b_4, f_5, q', m', o_2, s_4, t_4, a_4, t', o'Segment(F_2, R_2) → g_5Segment(R_2, T') → h_5Polygon(U_2, R, F_1) → t1, i_5, u_2, r_5Mirror(U_2, m) → V_2Mirror(R, m) → R'_1Mirror(F_1, m) → W_2Polygon(V_2, R'_1, W_2) → t1', w_2, v_2, r'_1Segment(B_1, O_1) → k_5Mirror(Q, m) → Q'_1Mirror(Q_1, m) → A_3Segment(Q'_1, A_3) → l_5