Second, you should learn to rotate, translate and split the graph in your mind. What you draw on the picture is dead, but it can't be dead in your mind.

Third, learn to deduce backwards, such as proving what I need to prove A, and then deduce it to the conditions step by step.

Fourth, master the rules, such as proving that the sides are equal, finding congruent triangles or corresponding angles are equal, and doubling when you see the center line.

Fifth, the theorem will be proved. It's definitely not enough to remember the theorems, not to mention the few theorems of triangles just now. The less nature a character has, the easier it is. There are only a few triangles.

Sixth, when asking questions, you'd better let others guide you and get the answer at once. It's useless.

Seventh, psychological problems, geometry is a game that a group of boring people in ancient Europe wanted to kill time. You don't have to be too afraid of him.

You can trust me privately for specific questions.