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Author:
chen mingchuan
GeoGebra
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第八周作业
柱體建築師
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
算柱 (兩位數)
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立體錯覺樓梯(使用透視法會稍有差距)
如何判斷球體
時鐘小幫手
空間中兩點間的距離
拋物線1-焦點法
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Upper and Lower Sum or Riemann Sum
Root
Quadrilaterals
Orthocenter
Intersection