名词
中文翻译：五原子的
同义词：
['pentagonal', 'pentavalent例句：1. The pentagon is a geometric shape with five sides.（五边形是一种几何形状。）']
例句：
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1. The pentagon is a geometric shape with five sides.
五边形是一种几何形状。
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2. The pentagon is used in many sports and games to represent the number five.
五边形在许多运动和游戏中被用来代表数字五。
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3.The pentagon is also known as the pentagram, which has been used in various cultures for its symbolic meaning.
五边形也被称为五角星，它在各种文化中都有其象征意义。