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圓的內接四邊形
Author:
曾己泉
用滑鼠移動圓形的點觀察角度的變化與角度和
GeoGebra
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畫出對稱圖形
兩位數加法
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
兩位數除以一位數（二）
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旋轉
正方形轉轉
橢圓
正三角形堆垛
平分线段或角
Discover Topics
Square
Numbers
Logarithm
Fractal Geometry
Frequency Distribution