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梯形有甚麼特性？
Author:
Anthony OR 柯志明
English version:
http://ggbtu.be/m79855
GeoGebra
New Resources
找出對稱軸
画直线等分三角形的面积
拼砌四邊形
四邉形 (四年級) 教師版
算柱 (兩位數)
Discover Resources
七巧板揖人
十字轉換成2正方形
跑馬燈
錐體建築師 4
Copy of 讀量杯上的刻度 (練習)
Discover Topics
Sequences and Series
Geometric Distribution
Sphere
Sine
Linear Functions