让我们随王延玲同学一起去感受给力的外角和吧.今天的第一节课是数学,老师讲完了多边形的内角和公式后,出示了这样一道题目:“一个多边形的每个内角都等于170°,则这个多边形的边数是.”老师还强调说:“看哪个同学做得又快又准确,做完的同学请举手示意一下.”作为本班数学状元的我自然不会懈怠,马上投入到“战斗”中:设边数为n,根据 Let us experience the outside corner of the force with Wang Yanling. The first lesson today is mathematics. After the teacher finished the interior angles and formulae of polygons, he showed such a topic: “ Each interior angle of a polygon is equal to 170 °, then the number of sides of this polygon is .” The teacher also emphasized that: “Which classmates can do it quickly and accurately, the classmates who finish the class please raise their hands to indicate something.” As the mathematics champion of this class, I naturally do not Will slack off and immediately invest in “battle”: set the number of edges to n, according to