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公切線的條數
Author:
李春培
公切線的條數
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等的四邊形
球體建築師
找出對稱軸
第八周作业
Discover Resources
Nets of the cube
底圖為圓，截面為半圓
葛爾崗點
Angle of elevation and Angle of depression(仰角和俯角)
外心
Discover Topics
Circle
Linear Programming or Linear Optimization
Inequalities
LCM and GCD
Mathematics