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the definition of ellipse
Author:
丁明智
GeoGebra
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美國國旗 (Codex, 2026.10.06)
美國國旗 (Codex 版)
四邊形的特性
三半圓間的相切圓(Codex╱2026.10.07)
直角坐標平面上的旋轉變換
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接听率与人工呼入量、人工呼出量之间的关系
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