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椭圆的光学性质
Author:
孟宝兴
GeoGebra
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判斷球體
找出對稱軸
三位數除以一位數(二)
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
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我的第一個GGB動畫
外公切線段長求法
正方形內部
双曲椭圆
數學電腦繪圖與解題
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Means
Tree Diagrams
Geometry
Volume
Coordinates