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九點圓 的複本
Author:
chen mingchuan
,
Wu Xiao-Ren
三角形的三中點,三垂足,三頂點到垂心中點共圓
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幾何作圖題:切三圓(題目)
世界平面地圖 (Codex╱2026.10.07)
Nested spiral octagon
三半圓間的相切圓(Codex╱2026.10.07)
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Copy of 包含除法(1 ÷分數)
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指数函数的副本
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Perimeter
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