通常,我们把矩形、菱形、正方形称为特殊的平行四边形,它们是初中几何的重点内容之一.由于这部分内容中的定义、性质、判定方法、图形类型较多,初学者容易混淆,常会“张冠李戴”.下面与同学们共同探讨一下特殊平行四边形的判定方法.一、准确理解和区别特殊平行四边形的判定方法多而且灵活,学习时,在明确有关概念 Usually, we call rectangles, diamonds, and squares as special parallelograms, which are one of the key contents of junior high school geometry. Due to the definitions, nature, judgment methods, and types of graphs in this part, beginners are confusing, often “Zhang Guan Li Dai”. Below with the students to discuss the special parallelogram determination method. First, the exact understanding and distinction of the special parallelogram determination methods are many and flexible, learning, in the clear concept