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托勒密定理推廣到直線
Author:
連琨銘
GeoGebra
New Resources
拼砌四邊形
【案例】2018年全国1卷理科12题
錐體建築師
畫出對稱圖形
球体的体积推导（优化版）
Discover Resources
Tedt
二次函數圖形與兩軸的交點
尺規作圖
工具：PlaneString
圆形磁场
Discover Topics
Piecewise Functions
Multiplication
Similarity Transformation or Similarity
Equations
Similar Triangles