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ptcc trigo level 2
Author:
Cheung Wing Chuen
GeoGebra
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錐體建築師
兩位數加法
兩組對邊相等的四邊形
異分母分數減法
找出對稱軸
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Angle Sum of Pentagon (SWC)
Ｑ５
合 24（附答案）
動畫基本滑桿
鉛筆畫圓
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