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20161029國旗
Author:
susan
GeoGebra
New Resources
算柱 (兩位數)
兩組對邊相等的四邊形
拼砌四邊形
GeoGebra笔记功能体验课件
四邊形的特性
Discover Resources
等差數列2
Centres
包含除法（整數÷整數）
圓錐截橫
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
Discover Topics
Geometric Transformations
Constructions
Equilateral Triangles
Solids or 3D Shapes
Linear Programming or Linear Optimization