tiếp tuyến

== Vietnamese == === Etymology === Sino-Vietnamese word from 接線, composed of 接 (“to touch”) and 線 (“line”). === Pronunciation === (Hà Nội) IPA(key): [tiəp̚˧˦ twiən˧˦] (Huế) IPA(key): [tiəp̚˦˧˥ twiəŋ˦˧˥] (Saigon) IPA(key): [tip̚˦˥ t⁽ʷ⁾iəŋ˦˥] === Noun === tiếp tuyến (geometry) a tangent line === See also === tiếp điểm giao tuyến tang