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圆中胡不归
Author:
万超杰
GeoGebra
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比較五件物件的重量
折扣
百分數及其應用
平行線的判定
第八周作业
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平行四邊形有甚麼特性?
龍騰4_1-1課例5
三角形外心
五邊形
柱體建築師 1的副本
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Trigonometric Functions
Similar Triangles
Probability
Percentages
Equations