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perimeter

Author:Tmw

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找出對稱軸
四邊形的特性
畫出對稱圖形
幾何作圖題：切三圓（題目）
中華民國國旗 (Codex╱2026.10.06)

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菱形有甚麼特性？
邊長與三角形（一）
近期新增圖檔
cos, sin 與單位圓的副本
正方体镂空模型（通用）

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Geometric Mean
Terms
Arithmetic Operations
LCM and GCD
Vectors 2D (Two-Dimensional)

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