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特別角的三角函數值(2)
Author:
藍邦偉 Blue
GeoGebra
New Resources
找出對稱軸
球體建築師
柱體建築師
第八周作业
三位數除以一位數（二）
Discover Resources
交錯弓形圓周角
rectangle construction
Flips
水波干涉
滑桿應用
Discover Topics
Poisson Distribution
Parabola
Area
Tangent Line or Tangent
Reflection