正方形金字塔
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这个范例演示了一个正方形金字塔的几何构造。它涉及正方形、立体几何等核心数学概念。通过使用GeoGebra命令如Point、Segment、Polygon、Pyramid等,可以构建金字塔的各个面和边。适合初中及以上学生学习立体几何。
GeoGebra 命令及参数
Point(Circle[A, a]) → BSegment(A, B) → bPolygon(A, B, 4) → poly1, c, d, e, f, C, DPyramid(poly1, (2 * a)) → g, E, faceABE, faceBCE, faceCDE, faceADE, edgeAE, edgeBE, edgeCE, edgeDENet(g, h) → i, F, faceFGJ, faceGHK, faceHIL, faceFIM, edgeFG, edgeGH, edgeHI, edgeFI, edgeFJ, edgeGJ, G, edgeGK, edgeHK, edgeHL, edgeIL, edgeIM, edgeFM, H, I, J, K, L, M, faceFGHIMidpoint(A, H) → NSegment(E, N) → lPoint(b) → OSegment(E, O) → mSegment(E, A) → nSegment(E, I) → pSegment(H, E) → qSegment(A, B) → rSegment(I, H) → sSegment(I, A) → tSegment(H, B) → f_1Segment(E, B) → g_1Segment(I, B) → h_1Intersect(d, e) → PSegment(A, H) → i_1Midpoint(f) → QSegment(E, Q) → j_1Segment(N, Q) → k_1Segment(N, A) → l_1Segment(H, N) → m_1