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齿轮咬合

Author:GeoGebra Institute of WuXi

曲线指令的应用

New Resources

拼砌四邊形
錐體建築師
兩組對邊相等和有直角的四邊形
兩位數加法
第八周作业

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公弦
telling the time
包含除法（1 ÷分數）
切線性質B
教學成果

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Isosceles Triangles
Cone
Surface
Rotation
Special Points

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