sub·tend
verb/səbˈtend/
/səbˈtend/
(geometry)Verb Forms
| present simple I / you / we / they subtend | /səbˈtend/ /səbˈtend/ |
| he / she / it subtends | /səbˈtendz/ /səbˈtendz/ |
| past simple subtended | /səbˈtendɪd/ /səbˈtendɪd/ |
| past participle subtended | /səbˈtendɪd/ /səbˈtendɪd/ |
| -ing form subtending | /səbˈtendɪŋ/ /səbˈtendɪŋ/ |
- subtend something (of a line or chord) to be opposite to an arc or angle
对向（弧或角） Word Originlate 16th cent. : from Latin subtendere, from sub- ‘under’ + tendere ‘stretch’.