如图, 为边长为 2 的正
的重心,
,
为
的外心, 则
的面积为
更新时间:2022-10-23 18:21:03
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【推荐1】在
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【推荐2】我国汉代数学家赵爽为了证明勾股定理,创制了一副“勾股圆方图”,后人称其为“赵爽弦图”.类比赵爽弦图,由3个全等的小三角形拼成如图所示的等边
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