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Author:
lamanleung
GeoGebra
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球体的体积推导
兩位數加法
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
第八周作业
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相似圖形基本概念
How to draw a heptagon with ruler andcomp…
earth
金惠吉：三维李萨如
单叶双曲面-双叶双曲面
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Continuity
Symmetry
Mode
Combinatorics
Quadratic Equations