noun🔗Share五角形A polygon with five sides and five angles."The stop sign has a pentagon shape. "一時停止の標識は五角形をしています。mathfigureChat with AIVocabulary GamePractice Reading
noun🔗Share五角形A fort with five bastions."The old fort, a formidable pentagon, protected the city from attack with its five strong bastions. "その古い要塞、手強い五角形は、その五つの強固な稜堡で都市を攻撃から守った。militaryarchitectureChat with AIVocabulary GamePractice Reading
