论文部分内容阅读
学习凸n边形内角和公I_n=(n-2)·180°小欧问老师:“凹n边形内角和等于多少?”老师微笑地说:“课本仅研究凸多边形,至于小欧提出的问题,本周末的兴趣组活动要对它进行专题研究,欢迎同学们参加。”周末活动开始,老师宣布科学课题后,指出
Learning convex n-angle inner angle and public I_n = (n-2) · 180 ° small Europe asked the teacher: “Concave n-angle inner angle and how much?” The teacher said with a smile: "The textbook only study the convex polygon, as Xiaoou proposed The issue of the interest group this weekend is to conduct a special study on it and welcome students to attend.” The weekend began when the teacher announced the scientific topic and pointed out