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623劉虹圻 方形地毯
Author:
呂麗珠
GeoGebra
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三位數除以一位數（二）
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
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人造「四腳獸」？
平行四邊形中點連線及分角線交點連線形狀
test2
Fractal
parabola 抛物线方程求解
Discover Topics
Incircle or Inscribed Circle
Expected Value
Difference and Slope
Numbers
Frequency Distribution