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正方形
Author:
何嘉驹
GeoGebra
New Resources
兩位數除以一位數（二）
三位數除以一位數（一）
兩組對邊相等的四邊形
兩位數除以一位數（一）
球體建築師
Discover Resources
regular tetrahedron in a cube
弹簧
圖形拼砌
放大／縮小 Resize
One less prime number
Discover Topics
Parabola
Integers
Area
Vectors
Coordinates