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Author:
acchu
GeoGebra
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畫出對稱圖形
錐體建築師
判斷球體
球體建築師
四邊形的特性
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創作對稱圖形 LEVEL 4
作業1
我的第一个GGB绘本
黃金矩形
翰林數學_2下_CH3-4_三角形的外角大於任一內對角
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Addition
Equilateral Triangles
Pie Chart or Circle Chart
Angles
Planes