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tanx & cotx
Author:
denisjelly
GeoGebra
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科赫雪花
盈利與虧蝕
正方形雪花图案
球体的截面
双心四边形
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hihi
homework
小六 圓周
線的面化
初中数学探究
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Parallelogram
Arithmetic Operations
LCM and GCD
Trapezoid
Square