Abstract: The practical teaching of

Abstract: The practical teaching of geometry courses is called a key and difficult point in the teaching process of high school mathematics in our country. Triangles, as the most basic geometric figures, have very important scientific research value and significance. It almost runs through the entire compulsory education stage, and it have been explored and studied by many researchers in many aspects. At the same time, the geometry course is also helpful to cultivate the logical thinking ability of primary school students, the ability to combine numbers with actual situations, and the ability to intuitively understand and understand figures. Therefore, the geometry course plays a very important role in mathematics teaching and plays an important role. All stages of mathematics learning is combined in this article, making a detailed analysis of the teaching of triangle knowledge in different stages, and finally a simple statement of the teaching significance of triangles combining with teaching principles and teaching strategies is made. There is a simple research, mainly using the content research method to cultivate mathematics ability.