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ptccs2new3
Author:
Cheung Wing Chuen
GeoGebra
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空间中两直线的位置关系
圓周公式的應用
漂亮的摇摆曲线
多邊形的面積
【案例】2018年全国1卷理科12题
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判斷柱體 8
比較3個分數大小
squence
固定三角形的條件−題1的副本
折扣
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Conditional Probability
Root
Unit Circle
Diagrams
General Quadrilateral