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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
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【案例】2013年安徽高考15题
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
算柱 (兩位數)
異分母分數減法
Discover Resources
正弦定理
三心：與三角形形狀的關係
拋物線軌跡
cherry family
资料共享每日一题
Discover Topics
Percentages
Intersection
Distributions
General Quadrilateral
Addition