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congruent (SSA,RHS)
Author:
Ricky Chan
GeoGebra
New Resources
画直线等分三角形的面积
兩位數加法
兩位數除以一位數（二）
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
Discover Resources
拋物線軌跡圖
Mobius strip
橢圓軌跡04
滑桿應用
Orthocentre
Discover Topics
Ratios
Angles
Vectors 3D (Three-Dimensional)
Distributions
Line Segment