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優良作品2
Author:
Ching-Hui Chou
GeoGebra
New Resources
四邉形 (四年級) 教師版
第八周作业
異分母分數減法
兩組對邊相等的四邊形
找出對稱軸
Discover Resources
二面角
Quiz on Angle between a Line and a Plane 線面角：測驗
葛爾崗點
tool
五点共圆
Discover Topics
Rotation
Parabola
Indefinite Integral
Sequences and Series
Plane Figures or Shapes