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三角形的三个旁切圆.许兴华数学
Author:
许兴华数学
Topic:
Circle
,
Triangles
GeoGebra
New Resources
異分母分數減法
球體建築師
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
球体的体积推导（优化版）
Discover Resources
立體圖
優良作品5
Parallel lines (angle of inclination and slope) v2
立體圖形_截面
橢圓2--四圓心近似法
Discover Topics
Sine
Limits
Hypothesis Testing
Parallelogram
Tangent Line or Tangent