天气预报15天查询> 其他> 菱形对角线平分对角是定理吗

菱形对角线平分对角是定理吗

更新时间: 2020-10-31 00:00:00     

①四条边都相等的四边形是菱形。

②对角线互相垂直的平行四边形是菱形。

③一组邻边相等的平行四边形是菱形。

④对角线平分一组对角的平行四边形是菱形。一组对角线平分一组对角的平行四边形是菱形。注意:一组对角线平分一组对角的四边形不是菱形,也可能是筝形(有一条对角线所在直线为对称轴的四边形)

关键词: 菱形 对角线 平分 对角 定理

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-1525879/ | 耗时:0.6925 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=1525879 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1525879 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1525879 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1047503,1049398,1065185,1045655,1064833,1073025,1076105,1076111,1062240,1051025,1118771,1125122,1072403,1062062,1066632,1069271,1078737,1074886,2480522,1075482,1051425,1072314,1045911,1078054,1077286,1063749,1067233,1053422,980827,1065727) ORDER BY field (ArticleID,1047503,1049398,1065185,1045655,1064833,1073025,1076105,1076111,1062240,1051025,1118771,1125122,1072403,1062062,1066632,1069271,1078737,1074886,2480522,1075482,1051425,1072314,1045911,1078054,1077286,1063749,1067233,1053422,980827,1065727)