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正四面體
Author:
lamanleung
GeoGebra
New Resources
異分母分數減法
三位數除以一位數（一）
兩位數除以一位數（二）
找出對稱軸
拼砌四邊形
Discover Resources
圓交與公切線
中国GeoGebra用户认证说明
Lituus
Copy of 分數比較
兩組對邊相等和有直角的四邊形
Discover Topics
Fractions
Binomial Distribution
Circle
Secant Line or Secant
Plane Figures or Shapes