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congruent (SSS) 2
Author:
Ricky Chan
GeoGebra
New Resources
球体的体积推导（优化版）
兩組對邊相等的四邊形
兩位數除以一位數（二）
第八周作业
兩位數加法
Discover Resources
判斷線型函數y=f(x)=ax+b的b值
簡易統計
homework3
Dart Board
重心
鉛筆畫圓
Discover Topics
Matrices
Cuboid
Hypothesis Testing
Random Variables
Probability