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九點圓
Author:
午安你好啊~~
九點圓
GeoGebra
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小数 的副本
美國國旗 (Codex, 2026.10.06)
世界平面地圖 (Codex╱2026.10.07)
Nested spiral octagon
幾何作圖題：切三圓（題目）
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錯角
圓錐展開
gmj106a13 八角錐
雜思
邊長與三角形
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Ellipse
Kite
Centroid or Barycenter
Arithmetic
Triangles