天气预报 > 其他 > 常见的梯形分为几种
常见的梯形分为几种
更新时间: 2020-11-03 00:00:00  

分为三种:等腰梯形,直角梯形,普通梯形。普通梯形,是指只有一组对边平行的四边形。直角梯形是指一腰垂直于底的梯形。等腰梯形是指两腰相等的梯形。

梯形是指只有一组对边平行的四边形。平行的两边叫做梯形的底边,较长的一条底边叫下底,较短的一条底边叫上底。另外两边叫腰;夹在两底之间的垂线段叫梯形的高

关键词: 常见 梯形 分为

常见的梯形分为几种相关经验

天气预报

最新推荐

页面:/news/view-1889727/ | 耗时:0.4430 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1889727 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1889727 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1889727 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1091183,1131171,1110027,1093479,1093280,1116315,1087523,1051917,1062880,1048000,1078310,1128928,1112841,1066470,1092139,1062930,1064383,1095502,1088694,1066020,1107671,1082954,1368939,1044442,1100515,1071507,1085904,1080098,1112384,1063867) ORDER BY field (ArticleID,1091183,1131171,1110027,1093479,1093280,1116315,1087523,1051917,1062880,1048000,1078310,1128928,1112841,1066470,1092139,1062930,1064383,1095502,1088694,1066020,1107671,1082954,1368939,1044442,1100515,1071507,1085904,1080098,1112384,1063867)