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六上练习：时钟轨迹问题
Author:
肖昆明
GeoGebra
New Resources
找出對稱軸
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
球體建築師
拼砌四邊形
Discover Resources
Circumference 圓周
ghseh 二次函數描點法上下平移-5
Ex5D#6
纏繞圖 20180317四箴國中研習
分數與百分數的分別
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Intersection
Plane Figures or Shapes
Translation
Parallelogram
Centroid or Barycenter