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开关灯2
Author:
赵林
GeoGebra
New Resources
球體建築師
三位數除以一位數（二）
画直线等分三角形的面积
柱體建築師
找出對稱軸
Discover Resources
amoeba
Test
Rotational symmetry examples
橢圓 推桿例題
错觉多边形
Discover Topics
Power Functions
Fractions
Derivative
Linear Equations
Complex Numbers