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立體圖形
Author:
ycps chan
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拼砌四邊形
算柱 (兩位數)
兩組對邊相等的四邊形
錐體建築師
兩位數除以一位數（二）
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Prism
萬花筒
平行線法
橢圓的切線作圖
正方体展开图
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Median Line
Stochastic Process or Random Process
Root
General Quadrilateral
Translation