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q5-11
Author:
johnmayhk
GeoGebra
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直角坐標平面上的旋轉變換
異分母分數減法
兩位數除以一位數（一）
兩位數加法
錐體建築師
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異分母的分數加減
ex 8
如何求弦長
均分除法（分數÷整數）
三角函数图像变换动画演示
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Limits
Similar Triangles
Polygons
Normal Distribution
Linear Programming or Linear Optimization