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Czhang271828 发表于 2023-1-3 20:58 蹲一个大佬绘图. $AEPC$ 四点共圆, 弧 $EP$ 与弧 $PC$ 相等(因为 $AP$ 是 $\angle EAC$ 平分线), 从而 $\tr ...
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2025-7-15 14:58 GMT+8
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