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切割任意四邊形再拼砌成矩形
Author:
ho ting chit
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數除以一位數（二）
球體建築師
三位數除以一位數（一）
兩位數加法
Discover Resources
黃金螺線螢橋國中80303林心怡
Primary School Mathematics Collection
proof30黃煒皓
ex 2
菱形
Discover Topics
LCM and GCD
Vectors 3D (Three-Dimensional)
General Quadrilateral
Division
Fractions