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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
異分母分數減法
第八周作业
找出對稱軸
三位數除以一位數（一）
兩位數加法
Discover Resources
減法運算
斯坦納-雷米歐司(Steiner-Lehmus)定理證明三
illusion 鏡射
正方体截面
Copy of 畢式定理 (06)
Discover Topics
Set Theory
Inequalities
LCM and GCD
Planes
Algebra