Gauss proved that it is impossible to bisect any angle with a ruler and compasses. But some special angles can still be made, such as bisecting 90 degrees. It is very simple to use a right triangle, that is, the hypotenuse length of a 90-degree pair is twice the length of the opposite side of a 30-degree pair, and it can be divided equally by 90 degrees. I've done this problem before and I've dreamed of it for a long time. However, any angle will not work. Later, I saw the proof of introducing Gaussian in a popular science book, so I gave up. I'm really glad to meet you here today. You are very interested in this proposal. I wish you greater gains in the process of exploration.