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变化的三角形的内心.许兴华数学
Author:
许兴华数学
Topic:
Incircle or Inscribed Circle
,
Triangles
GeoGebra
New Resources
四邊形的特性
球体的体积推导（优化版）
兩位數加法
球體建築師
拼砌四邊形
Discover Resources
Circle123456789987654321
螺旋線
九點圓
台灣國旗(I love Taiwan)
operations of matrix 2rd ver
Discover Topics
Symmetry
Stochastic Process or Random Process
Congruence
Arithmetic Mean
Difference and Slope