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中点轨迹
Author:
DongHai Zhang
中点轨迹
GeoGebra
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GeoGebra笔记功能体验课件
三位數除以一位數（一）
算柱 (兩位數)
錐體建築師
找出對稱軸
Discover Resources
Symetry
ggb-fs-a3 用物件表示分數比例
生活中的平面圖形關係─平分
二次函數
分物活動 1
Discover Topics
Congruence
General Quadrilateral
Parallelogram
Confidence Interval
Bar Chart or Bar Graph