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梯形堆垛
Author:
施奕瑄
GeoGebra
New Resources
算柱 (兩位數)
判斷球體
近似值：有效數字
拼砌四邊形
兩組對邊相等的四邊形
Discover Resources
Square pyramid
分數認識
二年級_柱體的觀察
高中二年級向量的副本
我的第一个GGB绘本
Discover Topics
Quadrilaterals
Coordinates
Matrices
Equations
Area