如图,矩形的对角线
、
相交于点O,
,
,若
,则四边形OCED的周长为
更新时间:2022-12-16 11:52:11
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【推荐1】正方形
的边长为3,点P、Q在正方形不同的边上与点A构成等腰三角形,若等腰
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【推荐2】如图,在矩形
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【推荐1】如图,△ABC中,分别以AB、AC为边在△ABC外作等边三角形ABD和等边三角形ACE,连接CD、BE,四边形ADFE是平行四边形.
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(1)当∠BAC的度数为
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【推荐2】顺次连接对角线相等的四边形的四边中点,所得的四边形一定是_________ .
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【推荐1】如图,菱形
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【推荐2】如图,在
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