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GeoGebra
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蚶線包絡線
Author:
陳隆期
GeoGebra
New Resources
双心四边形
活动三：应用性质
直線的斜率：水平變化 & 鉛垂變化
斐波那契螺旋弧线（表格法）
异形操场
Discover Resources
linear function
Angle in alternate segment
鉛筆畫圓
序列向量
多普勒效应动态演示
Discover Topics
Arithmetic
Quadratic Functions
Tangent Function
Polynomial Functions
Square