## Chapter 4 Small Number and the Skateboard Park

Small Number is a young boy who gets into a lot of mischief. He lives in a big city with his mother and his older sister Perfect Number. Every Sunday afternoon, Small Number does his math homework. When he has trouble with math, he usually asks his sister for help. But this Sunday he has a geometry problem that looks very difficult and he decides to ask his cousin, Full Angle, who studies mathematics at the university.