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翰林數學_2下_CH3-1_三角形的外角和
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翰林數學
GeoGebra
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GeoGebra笔记功能体验课件
四邊形的特性
球體建築師
算柱 (兩位數)
小数 的副本
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星球運動模擬
Sequence指令練習(包絡線：拋物線)
角的大小與角兩臂的長度有關？
「相似三角形」任务3的副本
例题2（P点可拖动）
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Geometric Mean
Parabola
Arithmetic Operations
Quadratic Functions
Equilateral Triangles