梅特罗顿立方体
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①本范例演示梅特罗顿立方体的构造及其与黄道十二宫的联系;②涉及核心数学概念包括几何作图、圆、多边形、立体几何;③作图要点提炼自构造摘要,用到了Intersect(相交)、Point(点)、Segment(线段)、Circle(圆)、Line(直线)、Polygon(多边形)、Distance(距离)、Pyramid(金字塔)、Tetrahedron(四面体)、Plane(平面)、Mirror(镜像)等GeoGebra命令/对象;④适合高中及以上学生及数学爱好者学习几何作图与立体几何知识。
GeoGebra 命令及参数
Intersect(xAxis, yAxis) → APoint(xAxis) → BSegment(A, B) → fCircle(A, Segment[A, B]) → cPoint(yAxis) → CCircle(C, f) → dPoint(yAxis) → DCircle(D, f) → ePoint(yAxis) → ECircle(E, f) → gPoint(yAxis) → FCircle(F, f) → hCircle(G, f) → kCircle(H, f) → pCircle(I, f) → qCircle(J, f) → rLine(J, G) → iLine(I, H) → jPoint(j) → KCircle(K, f) → sPoint(j) → LCircle(L, f) → tPoint(i) → MCircle(M, f) → c_1Point(i) → NCircle(N, f) → d_1Polygon(L, F, N, K, E, M) → poly1, l, f_1, n, k_1, e_1, mPolygon(M, F, K) → t1, k_2, m_1, f_2Polygon(L, E, N) → t2, n_1, l_1, e_2Intersect(d, f_2, 2) → OIntersect(f_2, n_1) → PIntersect(k_2, n_1) → QIntersect(k_2, e_2) → RIntersect(m_1, e_2) → SIntersect(m_1, l_1) → TIntersect(f_2, l_1) → UPolygon(P, Q, R, S, T, U) → poly2, p_1, q_1, r_1, s_1, t_1, uDistance(M, F) → distanceMFDistance(S, K) → distanceSKDistance(M, F) → MFDistance(S, K) → SKPyramid(t2, 0) → o, V, faceELV, faceENV, faceLNV, edgeLV, edgeEV, edgeNVTetrahedron(L, E, faceLNV) → v, W, edgeLZ, edgeWZ, edgeEZ, Z, faceELW, faceLWZ, faceELZ, faceEWZ, edgeLW, edgeEL, edgeEWPlane(Z, xOyPlane) → wMirror(faceLWZ, w) → faceLWZ'Mirror(faceELZ, w) → faceELZ'Mirror(faceEWZ, w) → faceEWZ'