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公切線的條數
Author:
李春培
公切線的條數
GeoGebra
New Resources
第八周作业
畫出對稱圖形
【案例】2013年安徽高考15题
拼砌四邊形
兩組對邊相等的四邊形
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畫蛇添福
Scientific Notation 科學記數法
Incentre
分割正方体
勾股定理III 基於歐基里德(Euclid)的證明
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Ratios
Trigonometry
Cube
Conic Sections
Calculus