圆柱与圆锥体积比较 by Patricia Loy (2)
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①本范例演示圆柱与圆锥体积随底面积和高的变化关系;②涉及核心数学概念包括体积公式、指数运算、自然数应用、几何图形变换;③作图要点运用了Intersect(交点)、Circle(圆)、Point(点)、Segment(线段)、Cylinder(圆柱)、Cone(圆锥)、Distance(距离)、Volume(体积)、PointIn(点在内部判断)等GeoGebra命令与对象;④适合高中阶段立体几何教学及体积计算应用。
GeoGebra 命令及参数
Intersect(xAxis, yAxis) → ACircle(A, Radius) → cPoint(c) → BSegment(A, B) → aPoint(zAxis) → CCylinder(A, C, Radius) → Cylinder, d, e, fCone(A, C, Radius) → Cone, h, iDistance(A, C) → distanceAHeightVolume(Cylinder) → volumebPointIn(f) → PointfVolume(Cone) → volumegPointIn(xOyPlane) → PointxOyPlane_1Volume(Cone) → jPointIn(xOyPlane) → PointxOyPlane_2Volume(Cone) → kPointIn(xOyPlane) → PointxOyPlane_3Volume(Cone) → lPointIn(xOyPlane) → PointxOyPlaneVolume(Cone) → mPointIn(i) → PointiSegment(A, C) → Height