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几何模版：线段关系练习
Author:
宋晓燕
GeoGebra
New Resources
美國國旗 (Codex 版)
AI 訓練教室
畫出對稱圖形
幾何作圖題：切三圓（題目）
世界平面地圖 (Codex╱2026.10.07)
Discover Resources
平方根
cycloid
平面区域的理解
劉徽的「割圓術」
Inclined plane (Angle between two planes)
Discover Topics
Equilateral Triangles
Sine
Reflection
Fractions
Vectors 2D (Two-Dimensional)