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多边形相邻两边所组成的角叫多边形的内角,其个数与多边形边数、顶点个数相同.借助对角线,我们把四边形转化为三角形,利用三角形内角和定理,得到四边形内角和是360°这个结论.那么任意多边形的内角和是多少度呢?我们想到将多边形分成
The corner formed by two adjacent sides of a polygon is called the interior angle of the polygon. The number of polygons is the same as the number of sides and vertices of the polygon. With diagonal lines, we convert the quadrilateral to a triangle. Using triangle inner angles and theorem, the inner angle of the quadrilateral is 360. ° This conclusion. So what is the degree of the interior angle of an arbitrary polygon? We think of dividing the polygon into