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两个等腰三角形
Author:
孟宝兴
GeoGebra
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兩組對邊相等的四邊形
兩位數加法
錐體建築師
判斷球體
GeoGebra笔记功能体验课件
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畢式定理 (04)
畢氏定理
圓上的角任務(二): 提示卡
-3/2 ≤ cosα + cosβ + cosγ ≤ 3
根據百分率找數量（一）: 例2的副本
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Similar Triangles
Hypothesis Testing
Root
Function Graph
Arithmetic Mean