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切線段等長
Author:
謝易達
可移動P點，檢查切線段是否等長
GeoGebra
New Resources
第八周作业
兩組對邊相等的四邊形
兩位數加法
【案例】2018年全国1卷理科12题
畫出對稱圖形
Discover Resources
工具箱
区域面积
圓錐切球
軌跡 直線 (與兩平行線等距)
碎形三角形
Discover Topics
Optimization Problems
Correlation
Constructions
Vectors 2D (Two-Dimensional)
Ratios