| 单词 | pedal line |
| 释义 | > as lemmaspedal line pedal line n. Geometry the straight line passing through the feet of the perpendiculars on the (produced) sides of a triangle drawn from a point on the circumscribed circle. ΚΠ 1866 W. H. Besant (title) Note on the envelope of the pedal line of a triangle. 1976 K. Satyanarayana (title) Poristic theory, pedal lines, Kantor lines, Kantor points and allied topics. < as lemmas |
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