平行六面体的体积
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①本范例演示平行六面体的体积计算与可视化;②涉及核心数学概念包括向量、点、线、面、体积、距离、角度等;③构造过程中运用了Vector(向量)、Line(线)、Intersect(交点)、Prism(棱柱)、Midpoint(中点)、Volume(体积)、Point(点)、Distance(距离)、Segment(线段)、OrthogonalLine(垂线)、Angle(角度)、PointIn(点在线上)等GeoGebra命令和对象;④适合高中立体几何教学或自学,帮助理解体积计算原理。
GeoGebra 命令及参数
Vector(A, C) → uVector(A, B) → vVector(A, D) → wLine(D, v) → fLine(D, u) → gLine(B, w) → hIntersect(h, f) → ELine(E, g) → iLine(C, w) → jIntersect(g, j) → FLine(C, v) → kLine(B, u) → lIntersect(k, l) → GLine(F, k) → mIntersect(i, m) → HVector(C, G) → aVector(B, G) → bVector(B, E) → cVector(C, F) → dVector(G, H) → eVector(D, F) → nVector(D, E) → pVector(E, H) → qVector(F, H) → rPrism(A, C, G, B, D) → o, I, edgeAC, edgeCG, edgeBG, edgeAB, edgeAD, edgeCI, edgeGJ, edgeBK, edgeDI, edgeIJ, J, edgeJK, edgeDK, K, faceABGC, faceACID, faceCGJI, faceBGJK, faceABKD, faceDIJKMidpoint(A, C) → LMidpoint(A, B) → MMidpoint(A, D) → NVolume(o) → volumeoPoint(o) → PointoMidpoint(A, P) → ODistance(P, A) → distancePASegment(A, P) → tOrthogonalLine(D, t, space) → f_1Intersect(f_1, t) → QSegment(D, Q) → g_1Angle(D, Q, A) → αVector(A, Q) → u_1Midpoint(Q, A) → RDistance(A, Q) → distanceAQMidpoint(A, Q) →Distance(A, Q) → a_1Midpoint(A, Q) →PointIn(faceABGC) → PointfaceABGC