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诱导公式四（原点对称关系）
Author:
桃篮翁
GeoGebra
New Resources
畫出對稱圖形
找出對稱軸
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
球體建築師
Discover Resources
面积与面积问题
Copy of 根據百分率找數量（一）: 例2
面鏡的反射
圓柱體的體積及總表面面積
函数作图工具的副本
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Normal Distribution
Prism
Diagrams
Fractions
Quadrilaterals