quadrilateral

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

quad·ri·lat·er·al /ˌkwɒdrəˈlætərəl◂ $ ˌkwɑː-/ noun [countable] technical HMCFa flat shape with four straight sides 四边形 —quadrilateral adjective

Examples from the Corpus

quadrilateral• For emotional resonance, flags are about as potent as a quadrilateral of cloth can be.• The cyclic quadrilateral so formed has an important property; its opposite angles add to 180°.• The cluster is made up of a small quadrilateral which is distinctive enough, and is very characteristic with × 20.