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固定周界的長方形的面積變化（周界是200厘米）
Author:
李寶玲
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
sanjiaohanshu
Claude 解幾何題
長方體平面投影 (Codex版)
近似值：有效數字
球體建築師
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鏡射矩陣 (CAS)
Copy of 正多邊形柱體表面積展開圖
拋物線軌跡
伍四红 圆与正方形 面积同周长比较
函数作图工具的副本
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Combinatorics
Scalene Triangles
Quadrilaterals
Exponent
Scatter Plot