The munber of diagonals that can drawn i a regular polygon with twenty sides is______

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/20 06:23:29

The munber of diagonals that can drawn i a regular polygon with twenty sides is______

正四边形的边长为20 则对角线为___ 答案是 20根号2