三角形按角分类可分为哪两类

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select * from tbl_Articles WHERE ArticleID=2049697 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2049697 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2049697 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1124963,1802841,2538837,1122905,2573613,335480,818155,166042,3046832,2165395,2913867,315897,358766,125923,1284132,2196028,2986827,125203,3384965,528021,1338675,350690,3046808,609964,2326795,2655807,1131731,2529703,3342982,305949) ORDER BY field (ArticleID,1124963,1802841,2538837,1122905,2573613,335480,818155,166042,3046832,2165395,2913867,315897,358766,125923,1284132,2196028,2986827,125203,3384965,528021,1338675,350690,3046808,609964,2326795,2655807,1131731,2529703,3342982,305949)