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線性變換矩陣（二階）的副本
Author:
xiaodandan
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arist
GeoGebra
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湖南省张毅郴数字教研工作室 logo
sanjiaohanshu
國旗 (作圖步驟直接餵給 Claude)
三半圓間的相切圓(Codex╱2026.10.07)
中華民國國旗 (Codex╱2026.10.06)
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Homework5
畢氏定理動畫
三角形內心
Drag me~
勾股定理证明2
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Function Graph
Equilateral Triangles
Cosine
Right Triangles
Difference and Slope