It is not difficult to analyze geometry in the process of college entrance examination, but it requires a lot of calculation. Always put your hands on it. Don't just look. I remember there was a quota in the 2009 college entrance examination. I forgot the details. The topic looks scary. When I helped senior three, they didn't dare to write, and their thoughts couldn't be straightened out. In fact, it's chained. Starting from the most basic concept, it is more troublesome to combine the linear equation with the quadratic equation, but in the end.