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教学素材:正切函数及其反函数
Author:
清风拂琴,陌上花开
GeoGebra
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科赫雪花
第八周作业2
折扣
比較五件物件的重量
双心四边形
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volleyball throughing 1
圓周角與圓心角的關係
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Addition
Rectangle
Geometric Distribution
Straight Lines
Optimization Problems