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正八面體
Author:
侯杰材
正八面體
GeoGebra
New Resources
球體建築師
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
Discover Resources
Surface area of sphere
優良作品3(怡雯)
周界-平移法(練習三)
爱心
勾股定理III 基於歐基里德(Euclid)的證明
Discover Topics
Set Theory
Rotation
Arithmetic Operations
Upper and Lower Sum or Riemann Sum
Cone