单词 | antiparallel lines |
释义 | > as lemmasantiparallel lines 2. Geom. antiparallel lines or antiparallels: two lines which make with two other lines angles equal each to each, but contrary ways, one being exterior and the other interior. ΚΠ 1796 C. Hutton Math. & Philos. Dict. I. 122. < as lemmas |
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