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作业1
Author:
JamesHuang
GeoGebra
New Resources
異分母分數減法
錐體建築師
找出對稱軸
三位數除以一位數（一）
第八周作业
Discover Resources
分數比較
特殊線.ggb
旁心
堆疊正立方體的副本
正方形纸片剪出正三角形（顶点在边上）
Discover Topics
Equilateral Triangles
Rhombus
Indefinite Integral
Kite
Arithmetic Mean