圆柱体的截面
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①本范例演示了通过改变截面角度和位置,圆柱体可能形成的不同截面图形,如圆形、椭圆形、矩形和梯形;②涉及的核心数学概念包括立体几何、解析几何、几何作图和概率统计;③作图要点提炼自构造摘要,使用了Intersect(相交)、Point(点)、Circle(圆)、Cylinder(圆柱)、OrthogonalLine(垂线)、Plane(平面)、IntersectPath(路径相交)、Corner(角)、Segment(线段)等GeoGebra命令和对象;④适合高中及以上学生学习和理解空间几何、截面分析以及相关数学应用。
GeoGebra 命令及参数
Intersect(xAxis, yAxis) → APoint(xAxis) → BCircle(A, B) → cCylinder(c, 6) → a, d, bPoint(d) → COrthogonalLine(C, d) → ePoint(d) → DOrthogonalLine(D, d) → fPoint(e) → EPlane(C, D, E) → gIntersectPath(g, a) → hCorner(h) → F, G, H, IPoint(h) → JPoint(d) → KOrthogonalLine(K, d) → iIntersect(i, c, 1) → LSegment(K, L) → jOrthogonalLine(J, j, space) → kIntersect(k, j) → MSegment(D, F) → lOrthogonalLine(M, l, space) → mIntersect(m, b, 1) → NPlane(J, M, N) → nIntersectPath(n, a) → pPoint(d) → OPoint(c) → PPoint(c) → QPoint(d) → ROrthogonalLine(R, d) → rIntersect(r, c, 1) → SSegment(R, S) → sPoint(s) → TPoint(d) → UOrthogonalLine(U, d) → tIntersect(t, c, 1) → VSegment(U, V) → a_1Point(a_1) → WPlane(O, W, T) → uIntersectPath(u, a) → c_1Corner(c_1) → Z, A_1, B_1, C_1Point(s) → D_1Point(a_1) → E_1Point(d) → F_1OrthogonalLine(F_1, d) → b_1Point(b_1) → G_1Plane(G_1, D_1, E_1) → wIntersectPath(w, a) → d_1Corner(d_1) → H_1, I_1, J_1, K_1