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圆之吻（Apollonius circles）
Author:
赵林
Topic:
Circle
,
Incircle or Inscribed Circle
GeoGebra
New Resources
異分母分數減法
畫出對稱圖形
兩組對邊相等和有直角的四邊形
球体的体积推导
兩組對邊相等的四邊形
Discover Resources
自製座標軸箭頭與標籤
鉛筆畫圓
Sunline
利用对称求线段和最值（移动端）的副本
數學電腦繪圖與解題
Discover Topics
Logic
Pyramid
Quadratic Functions
Standard Deviation
Secant Line or Secant