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变化的三角形的旁心.许兴华数学
Author:
许兴华数学
Topic:
Geometric Transformations
,
Triangles
GeoGebra
New Resources
錐體建築師
【案例】2013年安徽高考15题
判斷球體
球体的体积推导（优化版）
第八周作业
Discover Resources
Task4
square & Triangle
圓冪：到兩點的內積
somacube
正角、負角|Positive angles & Negative angles
Discover Topics
Functions
Rational Numbers
Dilation
Conic Sections
Natural Numbers