根据三角形的边角关系判定三角形的形状，这是《解三角形》一章的一类重要题型，也是近几年来全国各省市中考命题中的一类热门题型。那么怎样求解这类问题呢？解这类问题有哪些基本思路？由于题设条件不同，解决这类问题的基本思路有三种：一是根据边之间的关系去判定，即用正? The shape of the triangle is determined according to the relationship between the corners of the triangle. This is an important type of question in the chapter of “Triangle of the Triangle”, and it is also a type of hot topic in the examination propositions of various provinces and cities in the country in recent years. So how to solve this kind of problem? What are the basic ideas for solving such problems? Due to the different conditions of the questions, there are three basic ideas for solving such problems: First, judging according to the relationship between the edges, that is, using positive?