sub·tendBrE/səbˈtend/NAmE/səbˈtend/verbpresent simple - I / you / we / theysubtendBrE/səbˈtend/NAmE/səbˈtend/present simple - he / she / itsubtendsBrE/səbˈtendz/NAmE/səbˈtendz/past simplesubtendedBrE/səbˈtendɪd/NAmE/səbˈtendɪd/past participlesubtendedBrE/səbˈtendɪd/NAmE/səbˈtendɪd/ -ing formsubtendingBrE/səbˈtendɪŋ/NAmE/səbˈtendɪŋ/~sth(geometry几何) (ofalineorchord直线或弦) tobeoppositetoanarcorangle对向（弧或角）