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Elementary school math
Author:
呂宗錡
Drag E and F to rotate the rectangle RSTU.
GeoGebra
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GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
兩位數除以一位數（二）
四邊形的特性
【案例】2018年全国1卷理科12题
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中點軌跡(動點在兩圓上)
分數認識
數據分析（1）
切割正立方體
Find your perfect rectangle
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Distributions
Mathematics
Area
Surface
Quadrilaterals