请用这些数学词语写一个故事

有一个五边形,它的边长相等,每个内角都相等。那么猜一猜它的外角是多少呢?There is a pentagram,its side length equal,each interior Angle are equal。So guess its exterior Angle?故事：一次数学课上,老师剪了一个五边形。老师说：“同学们,这个五边形的各边是相等的,而且每个角都相等,你们猜一猜,它的外角是多少呢。”同学们议论纷纷。其实,任何一个多边形的外角都是360°Story:A math class,the teacher cut a pentagon。The teacher said:"the classmates,the pentagonal each side is the same,but each Angle are equal,you guess,how much is it quoin。"The classmates comment in succession。In fact,any a polygonal external Angle is 360 °以上是英汉对译