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三角形面積(3)
Author:
官長壽(longlife)
GeoGebra
New Resources
拼砌四邊形
找出對稱軸
球體建築師
第八周作业
異分母分數減法
Discover Resources
二項分布與抽樣
Sine Formula 正弦公式
面積認識
My second work
对数函数（表格文本效果）的副本
Discover Topics
Triangles
Symmetry
Cube
Continuity
Equilateral Triangles