Read Edit View history 切线 qiēxiàn tangent Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 切线/切線 · qiēxiàn · tangent 2026/03/04 切线 / 切線 qiēxiàn tangent tangent line (geometry) 这条直线是圆的切线。 noun created sense Mar 4, 2026, 02:25 AM