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pisa tower
Author:
faanyat
GeoGebra
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撒针估算面积实验
平行線的判定
第八周作业
第八周作业3
双心四边形
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「相似三角形」任务3
move
美國隊長
立方體截面
折扣
Discover Topics
Similar Triangles
Geometric Distribution
Prism
Sine
Quadratic Functions