“让学生受到观察、联想、类比、归纳、猜想、抽象概括、分析和综合等方法的熏陶,发挥数学学科重视考察学生的基础能力,着眼于发展学生综合能力的特点.”近几年来数学中考的变式题型就体现了这个特点,尤其是每年各地市的试卷里都有关于四边形综合题的变式题.这类题也是中考中难度较大的一类题.那么,变式题有哪些特点呢?有没有什么好的解决方法呢?下面我们就以近年来黑龙江省各地市的一些中考题为例进行说明. “Let the students be influenced by the methods of observation, association, analogy, induction, conjecture, abstraction, analysis and synthesis, and give full play to the mathematics subject to examine students ’basic ability and focus on the development of students’ comprehensive ability.” In recent years Variants of math test questions embody this feature, especially in the papers around the city each year have a variant of the quadrilateral synthesis questions .This type of question is also a difficult test in a class of questions. Then, the variant What are the characteristics of the title? Is there any good solution? Here we will take a few in Heilongjiang Province in recent years some of the test questions as an example to illustrate.