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旋转体
Author:
蔡永志
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拼砌四邊形
錐體建築師
算柱 (兩位數)
第八周作业
球体的体积推导(优化版)
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Quiz on Quadratic Formula 二次公式:測驗
畫三角形 題2d
quadrilaterals 2
angle
Treće pravilo podudarnosti
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Rotation
Limits
Stochastic Process or Random Process
LCM and GCD
Circle