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勒洛四面体（拼接法）
Author:
孟宝兴
GeoGebra
New Resources
兩位數除以一位數（二）
兩組對邊相等的四邊形
算柱 (兩位數)
柱體建築師
sanjiaohanshu
Discover Resources
由組織圖到頻數多邊形
平移動畫
數學傳播39卷4期, 平面幾何公式思考
Locus (Two points 2)
分數比較
Discover Topics
Geometric Mean
Cube
Probability
Geometry
Addition