| 单词 | undecagon | 
| 释义 | undecagonn. Geometry.   A plane figure having eleven sides and angles. ΘΚΠ the world > relative properties > number > geometry > shape or figure > 			[noun]		 > two-dimensional > with ten or more sides or angles quindecagon1570 quindecangle1636 hendecagon1649 decagona1652 dodecagon1658 quatuordecangle1667 myriagon1674 chiliagon1692 pendecagon1695 undecagon1728 1728    E. Chambers Cycl.  				Undecagon, is a regular Polygon of eleven Sides. 1798    C. Hutton Course Math. I. 267  				A Pentagon is a polygon of five sides..an Undecagon, eleven. 1879    Cassell's Techn. Educator 		(new ed.)	 I. 251.  				 This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2022). <  | 
	
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