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单词 pendecagon
释义

pendecagon

/pɛnˈdɛkəɡ(ə)n/ /pɛnˈdɛkəɡɒn/
Geometry rare
noun
A plane figure having fifteen straight sides and fifteen angles; a quindecagon.

Origin

Late 17th century; earliest use found in William Alingham (fl. 1694–1710). Apparently irregularly from pen- (in ancient Greek πέντε five: see penta-) + decagon. Compare post-classical Latin pentedecagonum, Hellenistic Greek πεντεκαιδεκάγωνον.

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更新时间:2025/3/22 17:36:27