Similarity and circle. According to the public information of the inquiry, the 22nd question is a graphic question, which is composed of a circle and a triangle. The knowledge points investigated are the vertical diameter theorem of a circle, the angle of the circle and the angle of the center, the similar triangles and the isosceles triangle. In 2022, the subjects of Urumqi senior high school entrance examination include Chinese, mathematics, English, physics and chemistry (combined volume), ideology and morality, and history. The scores in all subjects are as follows: Chinese, mathematics, English, physics and chemistry, ideology and morality, and history are all 150.