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圓錐節痕
Author:
Peter
GeoGebra
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第八周作业1
第八周作业3
比較五件物件的重量
折扣
常见四边形是否是双心四边形
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Quiz on Angle between a Line and a Plane 線面角：測驗
五位數
國旗
Twghmkc_時鐘
S3 Ch4.1 立體圖形(3D圖) - 十字形棱柱(ViewB)
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Triangles
Continuity
Surface
Natural Numbers
Rational Numbers