阅读短文，选择正确答案。
Hello, I'm Jack. I am a student. I have many friends at school. I go to school by bus; the school is near my home. Tom goes to school by bike. John goes to school by car. His mother drives(驾驶) the car. Mary goes to school by taxi. We are happy at school.
为角
终边上一点，则
＝
