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三角測量
Author:
1041051 陳柏維
GeoGebra
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三角函数 的副本
撒针估算面积实验
科赫雪花
斐波那契螺旋弧线（表格法-可动态调节）
活动三：应用性质
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判斷球體 4
M05E Rate of Change
教學－與直線有關的角
軌跡圖
探究三角形的全等條件
Discover Topics
Trapezoid
Curve Sketching
Orthocenter
Vectors 2D (Two-Dimensional)
Centroid or Barycenter