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正三角形的旋轉
Author:
李春培
正三角形的旋轉
GeoGebra
New Resources
錐體建築師
球体的体积推导（优化版）
画直线等分三角形的面积
兩位數加法
三位數除以一位數（一）
Discover Resources
GGB小組演示作業範例2
assigment7
[S2] a revised version of Jane’s GeoGebra file (modified by the author)
內擺線
圆面积的推导-开普勒法
Discover Topics
Kite
Mode
Linear Programming or Linear Optimization
Centroid or Barycenter
Trigonometric Functions