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3.5.1Projectivity and Perspectivity
Author:
代国兴 田立新
GeoGebra
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三半圓間的相切圓(Codex╱2026.10.07)
Earth with coastline
中華民國國旗 (Codex╱2026.10.06)
算柱 (兩位數)
Nested spiral octagon
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駐波:相向而行的兩行進波線性疊加而成
log functions
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Trapezoid
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