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各種四邊形
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Ted Yip
各種四邊形
GeoGebra
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錐體建築師
三位數除以一位數(一)
判斷球體
找出對稱軸
画直线等分三角形的面积
Opdag Ressourcer
Section Curves (2)
Angle Sum of Triangle
包絡線
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
奇偶性的应用
Udforsk emner
Parallelogram
Ellipse
Logaritme
Regning
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