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學習單：三角形內(外)角合
Author:
Tsai, Dung Jung
,
Tim Brzezinski
GeoGebra
GeoGebra
New Resources
異分母分數減法
三位數除以一位數（一）
兩位數加法
四邉形 (四年級) 教師版
判斷球體
Discover Resources
指數的對稱性
sweet sugar
勾股定理
Arithmetic Series 等差級數
面積題 E
Discover Topics
Rectangle
Ratios
Polynomial Functions
Vectors 3D (Three-Dimensional)
Mathematics