平行四边形在实际生活中随处可见,应用广泛.因此,利用平行四边形的性质解决与平行四边形有关的实际问题就显得尤为重要.同时,利用平行四边形还可以解决许多与面积有关的问题.下面通过对一道题目及其解法的反思,进一步加深理解平行四边形的有关问题.题目一位饱经沧桑的老人,经过一辈子的辛勤劳动,到晚年的时候,他已经拥有一块近似平行四边形的土地,如图1所示,记为ABCD.他临终前对两个儿子说:“这块土地,你们弟兄俩平分,但都能方便地使用水井(图 Parallelograms are widely used in real life and are widely used. Therefore, it is very important to solve the practical problems related to parallelograms by using the properties of parallelograms. At the same time, parallelograms can solve many problems related to areas. The rethinking of a topic and its solution further deepens the understanding of parallelograms. Title An old man who has experienced many vicissitudes of life, after a lifetime of hard work, in his later years he already had a land of approximately parallelograms, as shown in Figure 1. Recorded as ABCD. He said to his two sons before death: ”This land, your brothers and brothers are equally divided, but they can all use water wells conveniently.