There is nothing wrong with math, and the big questions are pieced together. When answering big questions, we should pay attention to the rules of the questions. For example, (1)(2) The small question is very simple, so the third small question is mostly difficult, but it can be solved by using the knowledge of the two questions. If you don't think, you don't feel sensitive enough and don't fully understand the relevant knowledge points. Doing more problems is good for you. Of course, the ability to solve problems is also important. For example, if equal line segments are required, try to go to the same line for comparison, bring in numerical line segments for comparison, and so on.