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折扣 例1的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
判斷球體
三位數除以一位數（一）
兩組對邊相等的四邊形
四邊形的特性
算柱 (兩位數)
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比流器3相連接方法--U,Z,Y,Δ
畢氏定理
圖形D
Fractal
周长相等，正方形，长方形和正三角形，圆面积大小比较
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Statistics
Plane Figures or Shapes
Straight Lines
Angles
Sequences and Series