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Author:
官長壽(longlife)
GeoGebra
阿壽工坊---
http://120.101.70.8/longlife/
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
四邉形 (四年級) 教師版
兩位數除以一位數（一）
球体的体积推导（优化版）
Discover Resources
畢氏定理
負二項分佈
千年曆
向量分解：解聯立
ETV 對稱
Discover Topics
Matrices
Prism
Reflection
Equilateral Triangles
Parametric Curves