四边形是日常生活中应用较为广泛的一种几何图形,尤其是平行四边形、矩形、菱形、正方形、梯形等特殊四边形的用处更多.有关四边形的知识是初中几何的基础.为帮助同学们深刻掌握这部分知识,本文将因各种原因所造成的错误解答列举如下,以供借鉴.一、错用三角形的知识而导致错误 The quadrilateral is a kind of geometric pattern widely used in daily life, especially the special quadrilateral such as parallelogram, rectangle, rhombus, square, trapezium and so on. The knowledge about the quadrilateral is the foundation of the junior high school geometry. To help the students to master This part of the knowledge, this article will be due to various reasons caused by the wrong answers are listed below, for reference. First, the wrong use of triangular knowledge and lead to errors