| 词汇 | quadrangle |
| 词源 | quadrangle [LME] Latin quattuor ‘four’ and angulus ‘corner, angle’ are the base elements of quadrangle. The quadri- and quadru- in many English words also mean ‘four’ as in quadrant [LME], and from the 17th century come quadratic; quadrilateral; and quadruped. |
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