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长方体及其展开图 by K NIRMALA DEVI

长方体及其展开图 by K NIRMALA DEVI
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2020-06-28 20:14
多边形立体几何几何作图
①本范例演示长方体的结构及其展开图（网）；②涉及核心数学概念：立体几何、多边形、体积计算、空间想象；③作图要点：使用Polygon（多边形）、Prism（棱柱）、Net（展开图）等GeoGebra命令，构建长方体及展开图各面；④适合初中及以上学生学习立体几何，理解几何体与平面图形的转换关系。

GeoGebra 命令及参数

  1. Polygon(A, B, 4, xOyPlane) → poly1, f, g, i, j, C, D
  2. Prism(poly1, h) → b, I, edgeAI, edgeBJ, edgeCK, edgeDL, edgeIJ, edgeJK, edgeKL, edgeIL, J, K, L, faceABJI, faceBCKJ, faceCDLK, faceADLI, faceIJKL
  3. Net(b, a) → c, E, R, S, T, U, V, faceEFGH, faceEFNM, faceFGPO, faceGHRQ, faceEHST, F, faceMNUV, edgeEF, edgeFG, edgeGH, edgeEH, edgeEM, edgeMN, edgeFN, edgeFO, edgeOP, G, edgeGP, edgeGQ, edgeQR, edgeHR, edgeHS, edgeST, edgeET, edgeNU, edgeUV, edgeMV, H, M, N, O, P, Q