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優良作品2(怡雯)
Author:
Ching-Hui Chou
GeoGebra
New Resources
柱體建築師
兩組對邊相等和有直角的四邊形
異分母分數減法
近似值：有效數字
兩位數除以一位數（二）
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垂心即內心
九點圓
No.4
S6G7三视图
仿生狗案例
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Mode
Diagrams
Geometric Mean
Constructions
Square