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11_線外垂線
Author:
iclntnu
GeoGebra
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伊朗國旗 (Codex╱2026.10.07)
幾何作圖題：切三圓（題目）
找出對稱軸
畫出對稱圖形
美國國旗 (Codex 版)
Discover Resources
Polygon Activity
立體圖形的截面
柱體建築師 5
Quiz on Solving One-step Linear Equations (1) | 解「一步」一次方程：測驗(1)
兩向量的比
Discover Topics
Translation
Cuboid
Curve Sketching
Mode
Subtraction