《多边形的内角和与外角和》的教学目标主要有三点:带领学生对多边形内、外角和的相关概念加以探析,领会相关定理,进而形成良好的数学问题解决思路。帮助学生掌握如何通过多边形内、外角和定理,实现对内角和的求解。帮助学生领会如何借助多边形的内、外角和相关定理,实现对多边形边数的具体计算求解。 There are three main teaching goals for “Polygon’s Inner Corner and Outer Corner”: lead the students to analyze the related concepts of polygon inner and outer corners, understand relevant theorems, and then form a good mathematical problem-solving ideas. Help students master how to solve interior angle sums by using polygon inner and outer angles and theorem. Help students understand how to use polygon inner and outer angles and related theorems to achieve a specific calculation of the number of polygon edges.