These are basic math studies, and you can't accomplish anything at all. Do you want to hoe it? Only the first one remembers that it can clarify the number if we know how to use it. For example, the nature of the bisector theorem, the distance of the dotted line bisecting an angle is equal to the angles on both sides. This sentence is actually very simple, that is, three conditions push the conclusion. But what if you don't know and don't understand how to apply it? What's more, in case of such problems, auxiliary lines should be added. Limited company 2, mathematical problem-solving methods have memory.

It is also important to learn math and problem-solving methods, because even if you have a hoe, you, I don't know how to use it, but you still can't hoe it. But you should also know which one to use when solving many problems in mathematics. Different methods should be adopted for different types, which is called "adapting to local conditions".