论文标题
Varignon's和Wittebauer的平行四边形
Varignon's and Wittenbauer's parallelograms
论文作者
论文摘要
在本文中，引入了同义平行四边形的概念。这个概念是对varignon's和wittebauer的平行四边形的概括，其对角线不平行。在未交叉的情况下，在不交叉的情况下，面积和周长的面积和周长的公式。同源平行四边形相似，并且从对角线相交点的角度看，这一事实得到了证明。
In this paper the concept of homothetic parallelogram is introduced. This concept is a generalization of Varignon's and Wittenbauer's parallelograms of an arbitrary quadrangle, whose diagonals are not parallel. A formula for the area and perimeter of a homothetic parallelogram for the case when quadrangles are not crossed is obtained. The fact that homothetic parallelograms are similar to one another and are in perspective from diagonals intersection point is proved.
