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正三角形的旋轉
Author:
李春培
正三角形的旋轉
GeoGebra
New Resources
找出對稱軸
球體建築師
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
異分母分數減法
Discover Resources
HKJHGJHG
練習
拼出三角形
欧拉线
題 2
Discover Topics
Indefinite Integral
Ratios
Reflection
Differential Equation
Boxplot