如何证两个三角形相似

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select * from tbl_Articles WHERE ArticleID=2697938 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2697938 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2697938 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(145501,1079307,1404584,150688,1067910,1126470,1128299,846346,531765,257078,1132577,1096256,3267548,206715,150742,220100,163661,216910,396137,1131669,267147,1104043,344048,1066426,1098243,411240,1082954,1464041,1069401,337291) ORDER BY field (ArticleID,145501,1079307,1404584,150688,1067910,1126470,1128299,846346,531765,257078,1132577,1096256,3267548,206715,150742,220100,163661,216910,396137,1131669,267147,1104043,344048,1066426,1098243,411240,1082954,1464041,1069401,337291)