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梯形有甚麼特性？
Author:
Anthony OR 柯志明
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
四邉形 (四年級) 教師版
兩位數除以一位數（一）
判斷球體
画直线等分三角形的面积
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Triangle 02
判斷錐體 3
Solution_to_a_System_of_Linear_Equations
國旗
勾股树的副本
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Boxplot
Algebra
Multiplication
Circle
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