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內外角平分線的副本
Author:
Niehanyu
,
羅驥韡 (Pegasus Roe)
角平分點（圖中 C 點）會形成一個圓
GeoGebra
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國旗 (Claude 版)
Nested spiral octagon
三半圓間的相切圓(Codex╱2026.10.07)
找出對稱軸
幾何作圖題：切三圓（題目）
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方格紙上畫平行四邊形3
長方體旋轉
證平行四邊形 (對角線互相平分) (對邊 // 且相等)
Quiz on Rotation 旋轉變換：測驗
二次函數01
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Polygons
Linear Programming or Linear Optimization
Equilateral Triangles
Correlation
Arithmetic Mean