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正四面体
Author:
刘金堂
Topic:
Solids or 3D Shapes
GeoGebra
New Resources
四邊形的特性
三位數除以一位數（二）
畫出對稱圖形
異分母分數減法
錐體建築師
Discover Resources
四心的變化II
一題多解,托勒密,代數,三角,柯西,鍾元杰
分數比較
ptccs2new3
劉徽的「割圓術」 的複本
Discover Topics
LCM and GCD
Power Functions
Mode
Statistical Characteristics
Rational Numbers