旋转探索(F形1)
几何画板及绘图内容加载中,请稍等……
①本范例演示F形图形的旋转变换及其几何性质;②涉及核心数学概念包括旋转、均值、外接圆、相关性、代数、正态分布;③作图要点运用了多边形构造、交点计算、旋转变换、线段绘制、角度测量等GeoGebra命令;④适合高中数学教学,用于理解几何变换与数据分析的结合。
GeoGebra 命令及参数
Polygon(A, B, 4) → poly1, f, g, h_2, i, C_1, DPolygon(D, C_1, 4) → poly2, j, k, l, m, E, FPolygon(F, E, 4) → poly3, n, p, q, r, G, HPolygon(H, G, 4) → poly4, s, t, a, b, I, JPolygon(J, I, 4) → poly5, c, d, e, f_1, K, LPolygon(K, I, 4) → poly6, g_1, h_1, i_1, j_1, M, NPolygon(N, M, 4) → poly7, k_1, l_1, m_1, n_1, O, PPolygon(G, E, 4) → poly8, p_1, q_1, r_1, s_1, Q, RPolygon(A, L, P, O, I, G, R, Q, E, B) → poly9, a_1, b_1, l_2, p_2, o, i_2, g_2, r_2, q_2, e_1Intersect(xAxis, yAxis) → SRotate(A, α, S) → A'Rotate(L, α, S) → L'Rotate(P, α, S) → P'Rotate(O, α, S) → O'Rotate(I, α, S) → I'Rotate(G, α, S) → G'Rotate(R, α, S) → R'Rotate(Q, α, S) → Q'Rotate(E, α, S) → E'Rotate(B, α, S) → B'Polygon(A', L', P', O', I', G', R', Q', E', B') → poly9', a', b', l', p', o', i', g', r', q', e'Rotate(A, β, C) → A''Rotate(L, β, C) → L'_1Rotate(P, β, C) → P'_1Rotate(O, β, C) → O'_1Rotate(I, β, C) → I'_1Rotate(G, β, C) → G'_1Rotate(R, β, C) → R'_1Rotate(Q, β, C) → Q'_1Rotate(E, β, C) → E'_1Rotate(B, β, C) → B''Polygon(A'', L'_1, P'_1, O'_1, I'_1, G'_1, R'_1, Q'_1, E'_1, B'') → poly9'_1, a'_1, b'_1, l'_1, p'_1, o'_1, i'_1, g'_1, r'_1, q'_1, e'_1Segment(B, S) → hSegment(S, B') → t_1Angle(B, S, B') → γSegment(B, C) → c_1Segment(C, B'') → d_1Angle(B, C, B'') → δ