noun🔗Share五边形 A polygon with five sides and five angles."The stop sign has a pentagon shape. "停车标志是五边形的。mathfigureChat with AIVocabulary GamePractice Reading
noun🔗Share五角堡垒，五边形堡垒 A fort with five bastions."The old fort, a formidable pentagon, protected the city from attack with its five strong bastions. "这座古老的堡垒，一个坚固的五角堡垒，以其五个坚固的棱堡保护着城市免受攻击。militaryarchitectureChat with AIVocabulary GamePractice Reading
