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单摆演示动画
Author:
wanghailong
GeoGebra
New Resources
畫出對稱圖形
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
第八周作业
画直线等分三角形的面积
Discover Resources
「相似三角形」任务5
Is this a prism 7
平面直角坐标系
Similar triangles reasons
初中二次函数课件设计（毕业设计）
Discover Topics
Cuboid
Mode
Dilation
Tangent Line or Tangent
Cylinder