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教學－與直線有關的角
Author:
Lau Sir
GeoGebra
New Resources
兩位數除以一位數（一）
異分母分數減法
球体的体积推导（优化版）
拼砌四邊形
球體建築師
Discover Resources
Quiz on Rotation 旋轉變換：測驗
YIPPUIMEIgeogebra
試算表的很多正方形
仙后座找北極星 (底稿)
S0G5平均不等式（无字证明）
Discover Topics
Sphere
Incircle or Inscribed Circle
Function Graph
Geometric Mean
Interest Calculation