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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
第八周作业
異分母分數減法
三位數除以一位數（二）
兩組對邊相等的四邊形
GeoGebra笔记功能体验课件
Discover Resources
三角形重心軌跡(動點在三圓上)
軌道
平移指令
拋物線6 包絡線法
小车
Discover Topics
Geometric Transformations
Equilateral Triangles
Intersection
Vectors 3D (Three-Dimensional)
Multiplication