noun a plane figure having ten sides and ten angles; any figure having ten angles. a regular decagon is one that has all its sides and angles equal.
DECAGON
Meaning of DECAGON in English
Webster English vocab. Английский словарь Webster. 2012
noun a plane figure having ten sides and ten angles; any figure having ten angles. a regular decagon is one that has all its sides and angles equal.
Webster English vocab. Английский словарь Webster. 2012