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帥哥的創舉 <3
Author:
張智傑
GeoGebra
New Resources
球体的体积推导（优化版）
畫出對稱圖形
找出對稱軸
錐體建築師
【案例】2018年全国1卷理科12题
Discover Resources
椭圆的定义
三角形內角和_2
兩線段和圓的關係
黃金矩形
数线段
Discover Topics
Upper and Lower Sum or Riemann Sum
Vectors 2D (Two-Dimensional)
Trigonometry
Tangent Line or Tangent
Set Theory