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餘弦函數 y=Cos(x)
Author:
alicesung0324
GeoGebra
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錐體建築師
四邉形 (四年級) 教師版
三位數除以一位數（二）
兩位數除以一位數（二）
球体的体积推导（优化版）
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银币
DSE Circle-ACT01A Relationship between Chords and Centre of a Circle
仙后座找北極星 (底稿)
s1118931
正方体展开图的副本
Discover Topics
Conic Sections
Geometric Transformations
Congruence
Addition
Linear Regression