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已知長方形周界和長求闊
Author:
Anthony OR 柯志明
Topic:
Perimeter
https://www.geogebra.org/m/m7mzr337
New Resources
Fibonacci Clock
四邉形 (四年級) 教師版
sanjiaohanshu
算柱 (兩位數)
畫出對稱圖形
Discover Resources
好玩的輪盤
六面體與八面體轉換
縫衣針
三角形外心
Copy of 簡易的迷宮
Discover Topics
Complex Numbers
Vectors 3D (Three-Dimensional)
Triangles
Subtraction
Equations