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Perimeter
Author:
Janice Wong
,
Anthony OR 柯志明
GeoGebra
New Resources
異分母分數減法
拼砌四邊形
判斷球體
三位數除以一位數（一）
柱體建築師
Discover Resources
點的堆墮
量角器
How to draw a square with ruler and compasses?
旋轉正方形
拼出三角形的副本
Discover Topics
Parabola
Equations
Orthocenter
Rotation
Conic Sections