看过《变形金刚》的小朋友,一定迷上了超酷的会变形的机器人,你知道四边形也会变形吗?看看它摇身一变变成了什么呢——一、四边形不仅仅是长方形、正方形、平行四边形,还包括许多不规则的图形。仔细观察这几个图形,哪些图形画一条直线就 Have seen the “Transformers” children, must be fascinated by the cool deformation of the robot, you know the quadrilateral will be deformed? Look at it transformed into what - a quadrilateral is not just a rectangle, square, Parallelogram, but also includes many irregular graphics. Carefully observe these several graphics, which draw a straight line