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特別角的三角函數值(2)
Author:
藍邦偉 Blue
GeoGebra
New Resources
柱體建築師
畫出對稱圖形
兩組對邊相等的四邊形
找出對稱軸
兩位數除以一位數（一）
Discover Resources
正12面體內接正四面體
數線
增加數據對平均數的影響
半角公式R.J. 沃克(R.J. Walker)
贪吃蛇小游戏
Discover Topics
Tangent Function
Special Points
Upper and Lower Sum or Riemann Sum
Derivative
Symmetry